Title: LiteSpeed Cache Image Optimization Last modified: November 7, 2017 --- # LiteSpeed Cache Image Optimization * Resolved [kioub](https://wordpress.org/support/users/kioub/) * (@kioub) * [8 years, 6 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/) * Hello, * I am using the latest version of the plugin (v1.6.2.1). The LiteSpeed server version is 5.1.17 * When I click on the “Request Key” button at the “LiteSpeed Cache Image Optimization” page the following error is returned: * SAPI Error hash does not match: ……. * Can you please elaborate on the cause of the issue? - This topic was modified 8 years, 6 months ago by [kioub](https://wordpress.org/support/users/kioub/). - This topic was modified 8 years, 6 months ago by [kioub](https://wordpress.org/support/users/kioub/). Viewing 15 replies - 1 through 15 (of 22 total) 1 [2](https://wordpress.org/support/topic/litespeed-cache-image-optimization/page/2/?output_format=md) [→](https://wordpress.org/support/topic/litespeed-cache-image-optimization/page/2/?output_format=md) * Plugin Support [Hai Zheng⚡](https://wordpress.org/support/users/hailite/) * (@hailite) * [8 years, 6 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/#post-9659544) * Can you post the full error here? It should be two hash strings within your `....` * Thread Starter [kioub](https://wordpress.org/support/users/kioub/) * (@kioub) * [8 years, 6 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/#post-9659624) * Thank you for the quick response. * The full error is shown below (hash changes every time I try to connect). * SAPI Error hash does not match: xWrVVbJlfEJHuAtv * To my understanding this is only one hashcode. * Plugin Support [Hai Zheng⚡](https://wordpress.org/support/users/hailite/) * (@hailite) * [8 years, 6 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/#post-9659650) * Can you do it again and paste the new error now? * Thats fine even it changed. Its supposed to change each time. * Thread Starter [kioub](https://wordpress.org/support/users/kioub/) * (@kioub) * [8 years, 6 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/#post-9659673) * The new message is the one shown below: * SAPI Error hash does not match: ClientCB[] Server[ef4zzkWQ16aIQveZ] * Plugin Support [Hai Zheng⚡](https://wordpress.org/support/users/hailite/) * (@hailite) * [8 years, 6 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/#post-9659699) * Please turn on debug log and send a request again. After you send a request there should be a callback log. Can you paste it here? * Thread Starter [kioub](https://wordpress.org/support/users/kioub/) * (@kioub) * [8 years, 6 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/#post-9659823) * Hello, I have enabled “Advanced” debug level also. Below are the results: * 11/07/17 18:56:08.906 [162.158.90.208:30761 1 KLo] GET HTTP/1.1 /wp-admin/admin. php 11/07/17 18:56:08.906 [162.158.90.208:30761 1 KLo] Query String: page=lscache- settings&settings-updated=true 11/07/17 18:56:08.906 [162.158.90.208:30761 1 KLo] User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36( KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36 11/07/17 18:56:08.906 [ 162.158.90.208:30761 1 KLo] Accept Encoding: gzip 11/07/17 18:56:08.906 [162.158.90.208: 30761 1 KLo] Cookie _lscache_vary: 8415bdf63c825dedea76f58a34d7d815 11/07/17 18:56:08.906 [162.158.90.208:30761 1 KLo] X-LSCACHE: true 11/07/17 18:56:08.906[ 162.158.90.208:30761 1 KLo] LSCACHE_VARY_VALUE: +webp 11/07/17 18:56:08.956 [ 162.158.90.208:30761 1 KLo] Media init 11/07/17 18:56:08.956 [162.158.90.208: 30761 1 KLo] X Cache_control -> private ( logged in user ) 11/07/17 18:56:08.957[ 162.158.90.208:30761 1 KLo] CDN init 11/07/17 18:56:08.957 [162.158.90.208:30761 1 KLo] Task init 11/07/17 18:56:08.957 [162.158.90.208:30761 1 KLo] LSCWP_CTRL bypassed empty 11/07/17 18:56:09.049 [162.158.90.208:30761 1 KLo] X Cache_control- > no Cache ( Admin page ) \ LSC_Control::set_nocache()@229 \ LSC_Admin->admin_init() @103 11/07/17 18:56:09.117 [162.158.90.208:30761 1 KLo] Data init 11/07/17 18: 56:09.117 [162.158.90.208:30761 1 KLo] Data: Checking optm table 11/07/17 18: 56:09.117 [162.158.90.208:30761 1 KLo] Data: Existed 11/07/17 18:56:09.125 [162.158.90.208: 30761 1 KLo] CHK html bypass: miss footer const 11/07/17 18:56:09.125 [162.158.90.208: 30761 1 KLo] not cacheable before ctrl finalize 11/07/17 18:56:09.125 [162.158.90.208: 30761 1 KLo] get_uid: 1 11/07/17 18:56:09.125 [162.158.90.208:30761 1 KLo] Vary role group: administrator 11/07/17 18:56:09.125 [162.158.90.208:30761 1 KLo] Vary show_admin_bar_front: true 11/07/17 18:56:09.125 [162.158.90.208:30761 1 KLo] Vary admin bar : true 11/07/17 18:56:09.125 [162.158.90.208:30761 1 KLo] X Cache_control -> no Cache ( changing default vary 8415bdf63c825dedea76f58a34d7d815 => admin_bar:1;logged-in:1;role:99 ) \ LSC_Control::set_nocache()@229 \ LSC_Vary- >_update_default_vary()@247 \ LSC_Vary->_finalize()@440 11/07/17 18:56:09.125[ 162.158.90.208:30761 1 KLo] X-LiteSpeed-Cache-Control: no-cache 11/07/17 18:56: 09.127 [162.158.90.208:30761 1 KLo] CHK html bypass: miss footer const 11/07/ 17 18:56:09.127 [162.158.90.208:30761 1 KLo] Media bypass: Not frontend HTML type 11/07/17 18:56:09.127 [162.158.90.208:30761 1 KLo] GUI bypassed by no counter 11/07/17 18:56:09.127 [162.158.90.208:30761 1 KLo] Optimizer bypass: Not frontend HTML type 11/07/17 18:56:09.127 [162.158.90.208:30761 1 KLo] CDN bypass 11/07/ 17 18:56:09.127 [162.158.90.208:30761 1 KLo] End response ——————————————————————————– * 11/07/17 18:56:17.495 [141.101.69.79:32267 1 uOR] GET HTTP/1.1 /feed/ 11/07/ 17 18:56:17.495 [141.101.69.79:32267 1 uOR] Query String: 11/07/17 18:56:17.495[ 141.101.69.79:32267 1 uOR] User Agent: Tiny Tiny RSS/1.15.3.4ca621a ([http://tt-rss.org/](http://tt-rss.org/)) 11/07/17 18:56:17.495 [141.101.69.79:32267 1 uOR] Accept Encoding: gzip 11/07/ 17 18:56:17.495 [141.101.69.79:32267 1 uOR] X-LSCACHE: true 11/07/17 18:56:17.545[ 141.101.69.79:32267 1 uOR] Media init 11/07/17 18:56:17.545 [141.101.69.79:32267 1 uOR] CDN init 11/07/17 18:56:17.545 [141.101.69.79:32267 1 uOR] Task init 11/ 07/17 18:56:17.546 [141.101.69.79:32267 1 uOR] LSCWP_CTRL bypassed empty 11/07/ 17 18:56:17.611 [141.101.69.79:32267 1 uOR] X Cache_control init on 11/07/17 18:56:17.691 [141.101.69.79:32267 1 uOR] CHK html bypass: miss footer const 11/ 07/17 18:56:17.691 [141.101.69.79:32267 1 uOR] X Cache_control off – feed 11/ 07/17 18:56:17.691 [141.101.69.79:32267 1 uOR] X Cache_control -> no Cache \ LSC_Control::set_nocache()@229 \ LSC_Control::finalize()@441 \ LSC->send_headers() @499 11/07/17 18:56:17.691 [141.101.69.79:32267 1 uOR] get_uid: 0 11/07/17 18: 56:17.691 [141.101.69.79:32267 1 uOR] Vary role id: failed, guest 11/07/17 18: 56:17.691 [141.101.69.79:32267 1 uOR] bypassed role check, guest 11/07/17 18: 56:17.691 [141.101.69.79:32267 1 uOR] X-LiteSpeed-Cache-Control: no-cache 11/ 07/17 18:56:17.691 [141.101.69.79:32267 1 uOR] CHK html bypass: miss footer const 11/07/17 18:56:17.691 [141.101.69.79:32267 1 uOR] Media bypass: Not frontend HTML type 11/07/17 18:56:17.691 [141.101.69.79:32267 1 uOR] GUI bypassed by no counter 11/07/17 18:56:17.691 [141.101.69.79:32267 1 uOR] Optimizer bypass: Not frontend HTML type 11/07/17 18:56:17.691 [141.101.69.79:32267 1 uOR] CDN bypass 11/07/17 18:56:17.691 [141.101.69.79:32267 1 uOR] End response ——————————————————————————– * 11/07/17 18:56:17.832 [162.158.90.208:23081 1 o8a] GET HTTP/1.1 /wp-admin/admin. php 11/07/17 18:56:17.832 [162.158.90.208:23081 1 o8a] Query String: page=lscache- optimization 11/07/17 18:56:17.832 [162.158.90.208:23081 1 o8a] User Agent: Mozilla/ 5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/ 61.0.3163.100 Safari/537.36 11/07/17 18:56:17.832 [162.158.90.208:23081 1 o8a] Accept Encoding: gzip 11/07/17 18:56:17.832 [162.158.90.208:23081 1 o8a] Cookie _lscache_vary: admin_bar:1;logged-in:1;role:99 11/07/17 18:56:17.832 [162.158.90.208: 23081 1 o8a] X-LSCACHE: true 11/07/17 18:56:17.832 [162.158.90.208:23081 1 o8a] LSCACHE_VARY_VALUE: +webp 11/07/17 18:56:17.886 [162.158.90.208:23081 1 o8a] Media init 11/07/17 18:56:17.887 [162.158.90.208:23081 1 o8a] X Cache_control- > private ( logged in user ) 11/07/17 18:56:17.887 [162.158.90.208:23081 1 o8a] CDN init 11/07/17 18:56:17.887 [162.158.90.208:23081 1 o8a] Task init 11/07/17 18:56:17.887 [162.158.90.208:23081 1 o8a] LSCWP_CTRL bypassed empty 11/07/17 18:56:17.984 [162.158.90.208:23081 1 o8a] X Cache_control -> no Cache ( Admin page ) \ LSC_Control::set_nocache()@229 \ LSC_Admin->admin_init()@103 11/07/17 18:56:18.058 [162.158.90.208:23081 1 o8a] CHK html bypass: miss footer const 11/07/17 18:56:18.058 [162.158.90.208:23081 1 o8a] not cacheable before ctrl finalize 11/07/17 18:56:18.058 [162.158.90.208:23081 1 o8a] get_uid: 1 11/07/ 17 18:56:18.058 [162.158.90.208:23081 1 o8a] Vary role group: administrator 11/ 07/17 18:56:18.058 [162.158.90.208:23081 1 o8a] Vary show_admin_bar_front: true 11/07/17 18:56:18.058 [162.158.90.208:23081 1 o8a] Vary admin bar : true 11/07/ 17 18:56:18.059 [162.158.90.208:23081 1 o8a] X-LiteSpeed-Cache-Control: no-cache 11/07/17 18:56:18.060 [162.158.90.208:23081 1 o8a] CHK html bypass: miss footer const 11/07/17 18:56:18.060 [162.158.90.208:23081 1 o8a] Media bypass: Not frontend HTML type 11/07/17 18:56:18.060 [162.158.90.208:23081 1 o8a] GUI bypassed by no counter 11/07/17 18:56:18.060 [162.158.90.208:23081 1 o8a] Optimizer bypass: Not frontend HTML type 11/07/17 18:56:18.060 [162.158.90.208:23081 1 o8a] CDN bypass 11/07/17 18:56:18.060 [162.158.90.208:23081 1 o8a] End response ——————————————————————————– * 11/07/17 18:56:20.721 [162.158.90.208:36993 1 YgY] GET HTTP/1.1 /wp-admin/admin. php 11/07/17 18:56:20.721 [162.158.90.208:36993 1 YgY] Query String: page=lscache- optimization&LSCWP_CTRL=sapi&LSCWP_NONCE=854f671c00&type=request_key 11/07/17 18:56:20.721 [162.158.90.208:36993 1 YgY] User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36 11/07/17 18:56:20.721 [162.158.90.208:36993 1 YgY] Accept Encoding: gzip 11/07/17 18:56:20.721 [162.158.90.208:36993 1 YgY] Cookie _lscache_vary: admin_bar:1;logged-in:1;role:99 11/07/17 18:56:20.721 [162.158.90.208:36993 1 YgY] X-LSCACHE: true 11/07/17 18:56:20.721 [162.158.90.208:36993 1 YgY] LSCACHE_VARY_VALUE: +webp 11/07/17 18:56:20.777 [162.158.90.208:36993 1 YgY] Media init 11/07/17 18:56:20.778 [162.158.90.208:36993 1 YgY] X Cache_control -> private ( logged in user ) 11/07/17 18:56:20.778 [162.158.90.208:36993 1 YgY] CDN init 11/07/17 18:56:20.778 [162.158.90.208:36993 1 YgY] Task init 11/07/17 18:56:20.778 [162.158.90.208: 36993 1 YgY] LSCWP_CTRL: sapi 11/07/17 18:56:20.778 [162.158.90.208:36993 1 YgY] LSCWP_CTRL verified: ‘sapi’ 11/07/17 18:56:20.779 [162.158.90.208:36993 1 YgY] Router parsed type: request_key \ LSC_Router::verify_type()@225 \ LSC_Admin_API:: sapi_proceed()@96 \ LSC->proceed_action()@286 11/07/17 18:56:20.780 [162.158.90.208: 36993 1 YgY] SAPI posting to : [https://wp.api.litespeedtech.com/request_key](https://wp.api.litespeedtech.com/request_key) 11/07/17 18:56:21.354 [162.158.90.208:36993 1 YgY] SAPI failed to decode post json: “hash does not match: ClientCB[] Server[vD6bvYicz82V8MXO]” 11/07/17 18: 56:21.354 [162.158.90.208:36993 1 YgY] SAPI request key failed: — ‘hash does not match: ClientCB[] Server[vD6bvYicz82V8MXO]’ 11/07/17 18:56:21.355 [162.158.90.208: 36993 1 YgY] 301 from [https://www.dotnetcodegeeks.com/wp-admin/admin.php](https://www.dotnetcodegeeks.com/wp-admin/admin.php) 11/07/17 18:56:21.355 [162.158.90.208:36993 1 YgY] 301 to [https://www.dotnetcodegeeks.com/wp-admin/admin.php?page=lscache-optimization&type=request_key](https://www.dotnetcodegeeks.com/wp-admin/admin.php?page=lscache-optimization&type=request_key) 11/07/17 18:56:21.355 [162.158.90.208:36993 1 YgY] X Cache_control -> no Cache( 301 to same url ) \ LSC_Control::set_nocache()@229 \ LSC_Control::check_redirect() @349 11/07/17 18:56:21.356 [162.158.90.208:36993 1 YgY] CHK html bypass: miss footer const 11/07/17 18:56:21.356 [162.158.90.208:36993 1 YgY] not cacheable before ctrl finalize 11/07/17 18:56:21.356 [162.158.90.208:36993 1 YgY] get_uid: 1 11/07/17 18:56:21.356 [162.158.90.208:36993 1 YgY] Vary role group: administrator 11/07/17 18:56:21.356 [162.158.90.208:36993 1 YgY] Vary show_admin_bar_front: true 11/07/17 18:56:21.356 [162.158.90.208:36993 1 YgY] Vary admin bar : true 11/07/17 18:56:21.357 [162.158.90.208:36993 1 YgY] X-LiteSpeed-Cache-Control: no-cache 11/07/17 18:56:21.357 [162.158.90.208:36993 1 YgY] CHK html bypass: miss footer const 11/07/17 18:56:21.357 [162.158.90.208:36993 1 YgY] Media bypass: Not frontend HTML type 11/07/17 18:56:21.357 [162.158.90.208:36993 1 YgY] GUI bypassed by no counter 11/07/17 18:56:21.357 [162.158.90.208:36993 1 YgY] Optimizer bypass: Not frontend HTML type 11/07/17 18:56:21.357 [162.158.90.208:36993 1 YgY] CDN bypass 11/07/17 18:56:21.357 [162.158.90.208:36993 1 YgY] End response——————————————————————————– * 11/07/17 18:56:21.736 [162.158.90.208:26269 1 Wfb] GET HTTP/1.1 /wp-admin/admin. php 11/07/17 18:56:21.736 [162.158.90.208:26269 1 Wfb] Query String: page=lscache- optimization&type=request_key 11/07/17 18:56:21.736 [162.158.90.208:26269 1 Wfb] User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36 11/07/17 18:56:21.736 [162.158.90.208: 26269 1 Wfb] Accept Encoding: gzip 11/07/17 18:56:21.736 [162.158.90.208:26269 1 Wfb] Cookie _lscache_vary: admin_bar:1;logged-in:1;role:99 11/07/17 18:56:21.736[ 162.158.90.208:26269 1 Wfb] X-LSCACHE: true 11/07/17 18:56:21.736 [162.158.90.208: 26269 1 Wfb] LSCACHE_VARY_VALUE: +webp 11/07/17 18:56:21.785 [162.158.90.208: 26269 1 Wfb] Media init 11/07/17 18:56:21.785 [162.158.90.208:26269 1 Wfb] X Cache_control -> private ( logged in user ) 11/07/17 18:56:21.785 [162.158.90.208: 26269 1 Wfb] CDN init 11/07/17 18:56:21.786 [162.158.90.208:26269 1 Wfb] Task init 11/07/17 18:56:21.786 [162.158.90.208:26269 1 Wfb] LSCWP_CTRL bypassed empty 11/07/17 18:56:21.881 [162.158.90.208:26269 1 Wfb] X Cache_control -> no Cache( Admin page ) \ LSC_Control::set_nocache()@229 \ LSC_Admin->admin_init()@103 11/ 07/17 18:56:21.948 [162.158.90.208:26269 1 Wfb] CHK html bypass: miss footer const 11/07/17 18:56:21.948 [162.158.90.208:26269 1 Wfb] not cacheable before ctrl finalize 11/07/17 18:56:21.956 [162.158.90.208:26269 1 Wfb] get_uid: 1 11/ 07/17 18:56:21.956 [162.158.90.208:26269 1 Wfb] Vary role group: administrator 11/07/17 18:56:21.956 [162.158.90.208:26269 1 Wfb] Vary show_admin_bar_front: true 11/07/17 18:56:21.956 [162.158.90.208:26269 1 Wfb] Vary admin bar : true 11/07/17 18:56:21.957 [162.158.90.208:26269 1 Wfb] X-LiteSpeed-Cache-Control: no-cache 11/07/17 18:56:21.958 [162.158.90.208:26269 1 Wfb] CHK html bypass: miss footer const 11/07/17 18:56:21.958 [162.158.90.208:26269 1 Wfb] Media bypass: Not frontend HTML type 11/07/17 18:56:21.958 [162.158.90.208:26269 1 Wfb] GUI bypassed by no counter 11/07/17 18:56:21.958 [162.158.90.208:26269 1 Wfb] Optimizer bypass: Not frontend HTML type 11/07/17 18:56:21.958 [162.158.90.208:26269 1 Wfb] CDN bypass 11/07/17 18:56:21.958 [162.158.90.208:26269 1 Wfb] End response——————————————————————————– * 11/07/17 18:56:28.398 [162.158.90.208:13581 1 ZIe] GET HTTP/1.1 /wp-admin/admin. php 11/07/17 18:56:28.398 [162.158.90.208:13581 1 ZIe] Query String: page=lscache- debug 11/07/17 18:56:28.398 [162.158.90.208:13581 1 ZIe] User Agent: Mozilla/ 5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/ 61.0.3163.100 Safari/537.36 11/07/17 18:56:28.398 [162.158.90.208:13581 1 ZIe] Accept Encoding: gzip 11/07/17 18:56:28.398 [162.158.90.208:13581 1 ZIe] Cookie _lscache_vary: admin_bar:1;logged-in:1;role:99 11/07/17 18:56:28.398 [162.158.90.208: 13581 1 ZIe] X-LSCACHE: true 11/07/17 18:56:28.398 [162.158.90.208:13581 1 ZIe] LSCACHE_VARY_VALUE: +webp 11/07/17 18:56:28.453 [162.158.90.208:13581 1 ZIe] Media init 11/07/17 18:56:28.454 [162.158.90.208:13581 1 ZIe] X Cache_control- > private ( logged in user ) 11/07/17 18:56:28.454 [162.158.90.208:13581 1 ZIe] CDN init 11/07/17 18:56:28.454 [162.158.90.208:13581 1 ZIe] Task init 11/07/17 18:56:28.454 [162.158.90.208:13581 1 ZIe] LSCWP_CTRL bypassed empty 11/07/17 18:56:28.569 [162.158.90.208:13581 1 ZIe] X Cache_control -> no Cache ( Admin page ) \ LSC_Control::set_nocache()@229 \ LSC_Admin->admin_init()@103 * Plugin Support [Hai Zheng⚡](https://wordpress.org/support/users/hailite/) * (@hailite) * [8 years, 6 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/#post-9659834) * This is not callback log. callback log is some like : * ``` 11/07/17 12:00:05.425 [192.168.0.54:47568 1 qWJ] POST HTTP/1.1 / 11/07/17 12:00:05.425 [192.168.0.54:47568 1 qWJ] Query String: litespeed_callback=1 ``` * Please paste it in [https://gist.github.com/](https://gist.github.com/) * Thread Starter [kioub](https://wordpress.org/support/users/kioub/) * (@kioub) * [8 years, 6 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/#post-9659843) * Where can I find the callback log? * Thread Starter [kioub](https://wordpress.org/support/users/kioub/) * (@kioub) * [8 years, 6 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/#post-9661950) * Hello, * I managed to pinpoint the cause of this issue. There seems to be incompatibility with CloudFlare. * I disabled CloudFlare on my site and the plugin worked. * Please keep that in mind so as to fix any CloudFlare related incompatibilities in future versions since many sites use their service. * Plugin Support [Cold Egg](https://wordpress.org/support/users/eric780217/) * (@eric780217) * [8 years, 6 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/#post-9663413) * Hi kioub, * Thanks your information. I have a server with CloudFlare to run image optimize success , so not sure how to reproduce it. Here is my debug log: * ``` yX0] Query String: litespeed_callback=1 yX0] SAPI __callback hash check 6sAXbd660ZtxnbJx: passed yX0] LSCWP_CTRL: sapi_passive_callback yX0] LSCWP_CTRL verified: 'sapi_passive_callback' yX0] Router parsed type: request_callback yX0] SAPI __callback request hash: 6sAXbd660ZtxnbJx ``` * We can improve or debug if you can share failed callback log from debug log. Also, do you set any firewall settings from CloudFlare? Do you use Pro plan? * Best, Eric * Thread Starter [kioub](https://wordpress.org/support/users/kioub/) * (@kioub) * [8 years, 6 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/#post-9664075) * Hello, * Below is the portion of the debug log that is logged when I try to retrieve a key: * ``` 11/08/17 21:30:24.054 [162.158.90.208:22037 1 yL4] GET HTTP/1.1 /wp-admin/admin.php 11/08/17 21:30:24.054 [162.158.90.208:22037 1 yL4] Query String: page=lscache-optimization&LSCWP_CTRL=sapi&LSCWP_NONCE=90be135921&type=request_key 11/08/17 21:30:24.054 [162.158.90.208:22037 1 yL4] User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.89 Safari/537.36 11/08/17 21:30:24.054 [162.158.90.208:22037 1 yL4] Accept Encoding: gzip 11/08/17 21:30:24.054 [162.158.90.208:22037 1 yL4] Cookie _lscache_vary: admin_bar:1;logged-in:1;role:99 11/08/17 21:30:24.054 [162.158.90.208:22037 1 yL4] X-LSCACHE: true 11/08/17 21:30:24.054 [162.158.90.208:22037 1 yL4] LSCACHE_VARY_VALUE: +webp 11/08/17 21:30:24.108 [162.158.90.208:22037 1 yL4] Media init 11/08/17 21:30:24.109 [162.158.90.208:22037 1 yL4] X Cache_control -> private ( logged in user ) 11/08/17 21:30:24.109 [162.158.90.208:22037 1 yL4] CDN init 11/08/17 21:30:24.109 [162.158.90.208:22037 1 yL4] Task init 11/08/17 21:30:24.110 [162.158.90.208:22037 1 yL4] LSCWP_CTRL: sapi 11/08/17 21:30:24.110 [162.158.90.208:22037 1 yL4] LSCWP_CTRL verified: 'sapi' 11/08/17 21:30:24.110 [162.158.90.208:22037 1 yL4] Router parsed type: request_key \ LSC_Router::verify_type()@225 \ LSC_Admin_API::sapi_proceed()@96 \ LSC->proceed_action()@286 11/08/17 21:30:24.111 [162.158.90.208:22037 1 yL4] SAPI posting to : https://wp.api.litespeedtech.com/request_key 11/08/17 21:30:26.022 [162.158.90.208:22037 1 yL4] SAPI failed to decode post json: "hash does not match: ClientCB[] Server[dX3o0lL2o7AhLIue]" 11/08/17 21:30:26.022 [162.158.90.208:22037 1 yL4] SAPI request key failed: --- 'hash does not match: ClientCB[] Server[dX3o0lL2o7AhLIue]' 11/08/17 21:30:26.024 [162.158.90.208:22037 1 yL4] 301 from https://www.dotnetcodegeeks.com/wp-admin/admin.php 11/08/17 21:30:26.024 [162.158.90.208:22037 1 yL4] 301 to https://www.dotnetcodegeeks.com/wp-admin/admin.php?page=lscache-optimization&type=request_key 11/08/17 21:30:26.024 [162.158.90.208:22037 1 yL4] X Cache_control -> no Cache ( 301 to same url ) \ LSC_Control::set_nocache()@229 \ LSC_Control::check_redirect()@349 11/08/17 21:30:26.024 [162.158.90.208:22037 1 yL4] CHK html bypass: miss footer const 11/08/17 21:30:26.024 [162.158.90.208:22037 1 yL4] not cacheable before ctrl finalize 11/08/17 21:30:26.025 [162.158.90.208:22037 1 yL4] get_uid: 1 11/08/17 21:30:26.025 [162.158.90.208:22037 1 yL4] Vary role group: administrator 11/08/17 21:30:26.025 [162.158.90.208:22037 1 yL4] Vary show_admin_bar_front: true 11/08/17 21:30:26.025 [162.158.90.208:22037 1 yL4] Vary admin bar : true 11/08/17 21:30:26.026 [162.158.90.208:22037 1 yL4] X-LiteSpeed-Cache-Control: no-cache 11/08/17 21:30:26.026 [162.158.90.208:22037 1 yL4] CHK html bypass: miss footer const 11/08/17 21:30:26.026 [162.158.90.208:22037 1 yL4] Media bypass: Not frontend HTML type 11/08/17 21:30:26.026 [162.158.90.208:22037 1 yL4] GUI bypassed by no counter 11/08/17 21:30:26.026 [162.158.90.208:22037 1 yL4] Optimizer bypass: Not frontend HTML type 11/08/17 21:30:26.026 [162.158.90.208:22037 1 yL4] CDN bypass 11/08/17 21:30:26.026 [162.158.90.208:22037 1 yL4] End response -------------------------------------------------------------------------------- 11/08/17 21:30:26.356 [162.158.90.208:13239 1 Uda] GET HTTP/1.1 /wp-admin/admin.php 11/08/17 21:30:26.356 [162.158.90.208:13239 1 Uda] Query String: page=lscache-optimization&type=request_key 11/08/17 21:30:26.356 [162.158.90.208:13239 1 Uda] User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.89 Safari/537.36 11/08/17 21:30:26.356 [162.158.90.208:13239 1 Uda] Accept Encoding: gzip 11/08/17 21:30:26.356 [162.158.90.208:13239 1 Uda] Cookie _lscache_vary: admin_bar:1;logged-in:1;role:99 11/08/17 21:30:26.356 [162.158.90.208:13239 1 Uda] X-LSCACHE: true 11/08/17 21:30:26.356 [162.158.90.208:13239 1 Uda] LSCACHE_VARY_VALUE: +webp 11/08/17 21:30:26.405 [162.158.90.208:13239 1 Uda] Media init 11/08/17 21:30:26.405 [162.158.90.208:13239 1 Uda] X Cache_control -> private ( logged in user ) 11/08/17 21:30:26.405 [162.158.90.208:13239 1 Uda] CDN init 11/08/17 21:30:26.405 [162.158.90.208:13239 1 Uda] Task init 11/08/17 21:30:26.406 [162.158.90.208:13239 1 Uda] LSCWP_CTRL bypassed empty 11/08/17 21:30:26.504 [162.158.90.208:13239 1 Uda] X Cache_control -> no Cache ( Admin page ) \ LSC_Control::set_nocache()@229 \ LSC_Admin->admin_init()@103 11/08/17 21:30:26.573 [162.158.90.208:13239 1 Uda] CHK html bypass: miss footer const 11/08/17 21:30:26.573 [162.158.90.208:13239 1 Uda] not cacheable before ctrl finalize 11/08/17 21:30:26.573 [162.158.90.208:13239 1 Uda] get_uid: 1 11/08/17 21:30:26.573 [162.158.90.208:13239 1 Uda] Vary role group: administrator 11/08/17 21:30:26.573 [162.158.90.208:13239 1 Uda] Vary show_admin_bar_front: true 11/08/17 21:30:26.573 [162.158.90.208:13239 1 Uda] Vary admin bar : true 11/08/17 21:30:26.573 [162.158.90.208:13239 1 Uda] X-LiteSpeed-Cache-Control: no-cache 11/08/17 21:30:26.574 [162.158.90.208:13239 1 Uda] CHK html bypass: miss footer const 11/08/17 21:30:26.574 [162.158.90.208:13239 1 Uda] Media bypass: Not frontend HTML type 11/08/17 21:30:26.574 [162.158.90.208:13239 1 Uda] GUI bypassed by no counter 11/08/17 21:30:26.574 [162.158.90.208:13239 1 Uda] Optimizer bypass: Not frontend HTML type 11/08/17 21:30:26.574 [162.158.90.208:13239 1 Uda] CDN bypass 11/08/17 21:30:26.574 [162.158.90.208:13239 1 Uda] End response -------------------------------------------------------------------------------- ``` * I have the default firewall settings (Medium) on CloudFlare, and no I do not use a PRO plan, I am on the free site plan. * Looking forward to your feedback. * Best, Byron * Plugin Support [Cold Egg](https://wordpress.org/support/users/eric780217/) * (@eric780217) * [8 years, 6 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/#post-9664212) * Hi Byron, * I still not found any `litespeed_callback` from your log. Can you try again? or something like `SAPI __callback hash check xxxx: failed` * You can enable Debug log for Admin only to get error log easier. * Thanks. Eric * Thread Starter [kioub](https://wordpress.org/support/users/kioub/) * (@kioub) * [8 years, 6 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/#post-9664362) * Hello, * No matter how many times I try, there is no log entry marked as “callback” recorded in the debug.log file, that is why you cannot find it. * All it gets recorded is what I posted on my last message. I have enabled debug log from the plugin setting page and set debug level to advanced. Everything else is set to default. * Looking forward to your feedback. * Plugin Support [Cold Egg](https://wordpress.org/support/users/eric780217/) * (@eric780217) * [8 years, 6 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/#post-9664434) * Not so sure is there any settings will bypass Query String? like from CloudFlare? * Thread Starter [kioub](https://wordpress.org/support/users/kioub/) * (@kioub) * [8 years, 6 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/#post-9664696) * I do not think so, the caching level is at “Standard” setting. Everything else is pretty much at default values for the free site plan. The main configuration there is that I force redirection to HTTPS through CloudFlare using its “Flexible” HTTPS option. * The only time I see the `litespeed_callback` literal in the debug log file is when I Pause CloudFlare for my site. When I resume its operation the logs are as I have posted above. Viewing 15 replies - 1 through 15 (of 22 total) 1 [2](https://wordpress.org/support/topic/litespeed-cache-image-optimization/page/2/?output_format=md) [→](https://wordpress.org/support/topic/litespeed-cache-image-optimization/page/2/?output_format=md) The topic ‘LiteSpeed Cache Image Optimization’ is closed to new replies. * ![](https://ps.w.org/litespeed-cache/assets/icon-256x256.png?rev=2554181) * [LiteSpeed Cache](https://wordpress.org/plugins/litespeed-cache/) * [Frequently Asked Questions](https://wordpress.org/plugins/litespeed-cache/#faq) * [Support Threads](https://wordpress.org/support/plugin/litespeed-cache/) * [Active Topics](https://wordpress.org/support/plugin/litespeed-cache/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/litespeed-cache/unresolved/) * [Reviews](https://wordpress.org/support/plugin/litespeed-cache/reviews/) * 22 replies * 4 participants * Last reply from: [Hai Zheng⚡](https://wordpress.org/support/users/hailite/) * Last activity: [8 years, 5 months ago](https://wordpress.org/support/topic/litespeed-cache-image-optimization/page/2/#post-9754119) * Status: resolved