Title: Help for php errors Last modified: August 30, 2020 --- # Help for php errors * Resolved [heesea](https://wordpress.org/support/users/heesea/) * (@heesea) * [5 years, 9 months ago](https://wordpress.org/support/topic/help-for-php-errors/) * Thank you so much for your plugin! It’s invaluable to me. When turning on the cache feature, I receive the following PHP warnings or errors. Do you have any idea what these could be? When testing the caching feature many months ago, I ended up turning cache off due to these types of errors. Trying again now and would like to continue, but the errors are still happening: * [30-Aug-2020 09:11:52 UTC] PHP Fatal error: Uncaught Error: Call to undefined function WP_Optimize() in /home/xxxxxx/public_html/wp-content/plugins/wp-optimize/ cache/file-based-page-cache-functions.php:825 Stack trace: #0 /home/xxxxxx/public_html/ wp-content/plugins/wp-optimize/cache/file-based-page-cache-functions.php(782): wpo_delete_files(‘/home/xxxxxx/p…’) #1 /home/xxxxxx/public_html/wp-content/plugins/ wp-optimize/cache/file-based-page-cache-functions.php(475): wpo_delete_files(‘/ home/xxxxxx/p…’) #2 /home/xxxxxx/public_html/wp-content/plugins/wp-optimize/cache/ file-based-page-cache.php(133): wpo_serve_cache() #3 /home/xxxxxx/public_html/ wp-content/advanced-cache.php(46): include_once(‘/home/xxxxxx/p…’) #4 /home/xxxxxx/ public_html/wp-settings.php(95): include(‘/home/xxxxxx/p…’) #5 /home/xxxxxx/public_html/ wp-config.php(79): require_once(‘/home/xxxxxx/p…’) #6 /home/xxxxxx/public_html/ wp-load.php(37): require_once(‘/home/xxxxxx/p…’) #7 /home/xxxxxx/public_html/ wp-blog-header.php(13): require_once(‘/home/xxxxxx/p…’) #8 in /home/xxxxxx/public_html/ wp-content/plugins/wp-optimize/cache/file-based-page-cache-functions.php on line 825 [30-Aug-2020 10:52:08 UTC] PHP Warning: Error while sending QUERY packet. PID=162890 in /home/xxxxxx/public_html/wp-includes/wp-db.php on line 2033 [30- Aug-2020 11:02:27 UTC] PHP Warning: Error while sending QUERY packet. PID=164896 in /home/xxxxxx/public_html/wp-includes/wp-db.php on line 2033 [30-Aug-2020 12: 12:12 UTC] PHP Fatal error: Uncaught Error: Call to undefined function WP_Optimize() in /home/xxxxxx/public_html/wp-content/plugins/wp-optimize/cache/file-based-page- cache-functions.php:825 Stack trace: #0 /home/xxxxxx/public_html/wp-content/plugins/ wp-optimize/cache/file-based-page-cache-functions.php(782): wpo_delete_files(‘/ home/xxxxxx/p…’) #1 /home/xxxxxx/public_html/wp-content/plugins/wp-optimize/cache/ file-based-page-cache-functions.php(475): wpo_delete_files(‘/home/xxxxxx/p…’)# 2 /home/xxxxxx/public_html/wp-content/plugins/wp-optimize/cache/file-based-page- cache.php(133): wpo_serve_cache() #3 /home/xxxxxx/public_html/wp-content/advanced- cache.php(46): include_once(‘/home/xxxxxx/p…’) #4 /home/xxxxxx/public_html/wp- settings.php(95): include(‘/home/xxxxxx/p…’) #5 /home/xxxxxx/public_html/wp-config. php(79): require_once(‘/home/xxxxxx/p…’) #6 /home/xxxxxx/public_html/wp-load. php(37): require_once(‘/home/xxxxxx/p…’) #7 /home/xxxxxx/public_html/wp-blog- header.php(13): require_once(‘/home/xxxxxx/p…’) #8 in /home/xxxxxx/public_html/ wp-content/plugins/wp-optimize/cache/file-based-page-cache-functions.php on line 825 [30-Aug-2020 14:22:01 UTC] PHP Warning: Error while sending QUERY packet. PID=196597 in /home/xxxxxx/public_html/wp-includes/wp-db.php on line 2033 [30- Aug-2020 14:22:27 UTC] PHP Warning: Error while sending QUERY packet. PID=196714 in /home/xxxxxx/public_html/wp-includes/wp-db.php on line 2033 [30-Aug-2020 14: 22:27 UTC] PHP Warning: Error while sending QUERY packet. PID=196554 in /home/ xxxxxx/public_html/wp-includes/wp-db.php on line 2033 [30-Aug-2020 14:22:49 UTC] PHP Warning: Error while sending QUERY packet. PID=196608 in /home/xxxxxx/public_html/ wp-includes/wp-db.php on line 2033 [30-Aug-2020 14:22:49 UTC] PHP Warning: Error while sending QUERY packet. PID=196633 in /home/xxxxxx/public_html/wp-includes/ wp-db.php on line 2033 [30-Aug-2020 14:23:12 UTC] PHP Warning: Error while sending QUERY packet. PID=196631 in /home/xxxxxx/public_html/wp-includes/wp-db.php on line 2033 [30-Aug-2020 14:23:12 UTC] PHP Warning: Error while sending QUERY packet. PID=196502 in /home/xxxxxx/public_html/wp-includes/wp-db.php on line 2033 [30- Aug-2020 14:23:20 UTC] PHP Warning: Error while sending QUERY packet. PID=196561 in /home/xxxxxx/public_html/wp-includes/wp-db.php on line 2033 [30-Aug-2020 14: 23:20 UTC] PHP Warning: Error while sending QUERY packet. PID=196628 in /home/ xxxxxx/public_html/wp-includes/wp-db.php on line 2033 [30-Aug-2020 14:23:27 UTC] PHP Warning: Error while sending QUERY packet. PID=196953 in /home/xxxxxx/public_html/ wp-includes/wp-db.php on line 2033 [30-Aug-2020 14:23:27 UTC] PHP Warning: Error while sending QUERY packet. PID=196595 in /home/xxxxxx/public_html/wp-includes/ wp-db.php on line 2033 [30-Aug-2020 14:23:33 UTC] PHP Warning: Error while sending QUERY packet. PID=196446 in /home/xxxxxx/public_html/wp-includes/wp-db.php on line 2033 [30-Aug-2020 14:23:38 UTC] PHP Warning: Error while sending QUERY packet. PID=196482 in /home/xxxxxx/public_html/wp-includes/wp-db.php on line 2033 [30- Aug-2020 14:23:41 UTC] PHP Warning: Error while sending QUERY packet. PID=196508 in /home/xxxxxx/public_html/wp-includes/wp-db.php on line 2033 [30-Aug-2020 14: 23:57 UTC] PHP Warning: Error while sending QUERY packet. PID=196549 in /home/ xxxxxx/public_html/wp-includes/wp-db.php on line 2033 [30-Aug-2020 15:12:14 UTC] PHP Fatal error: Uncaught Error: Call to undefined function WP_Optimize() in / home/xxxxxx/public_html/wp-content/plugins/wp-optimize/cache/file-based-page- cache-functions.php:825 Stack trace: #0 /home/xxxxxx/public_html/wp-content/plugins/ wp-optimize/cache/file-based-page-cache-functions.php(475): wpo_delete_files(‘/ home/xxxxxx/p…’) #1 /home/xxxxxx/public_html/wp-content/plugins/wp-optimize/cache/ file-based-page-cache.php(133): wpo_serve_cache() #2 /home/xxxxxx/public_html/ wp-content/advanced-cache.php(46): include_once(‘/home/xxxxxx/p…’) #3 /home/xxxxxx/ public_html/wp-settings.php(95): include(‘/home/xxxxxx/p…’) #4 /home/xxxxxx/public_html/ wp-config.php(79): require_once(‘/home/xxxxxx/p…’) #5 /home/xxxxxx/public_html/ wp-load.php(37): require_once(‘/home/xxxxxx/p…’) #6 /home/xxxxxx/public_html/ wp-blog-header.php(13): require_once(‘/home/xxxxxx/p…’) #7 /home/xxxxxx/public_html/ index.php(17): require(‘/home/xxxxxx/p…’) #8 {main} thrown in /home/xxxxxx/public_html/ wp-content/plugins/wp-optimize/cache/file-based-page-cache-functions.php on line 825 [30-Aug-2020 15:16:07 UTC] PHP Warning: mkdir(): Not a directory in /home/ xxxxxx/public_html/wp-content/plugins/wp-optimize/cache/file-based-page-cache- functions.php on line 95 [30-Aug-2020 15:55:37 UTC] PHP Warning: mkdir(): Not a directory in /home/xxxxxx/public_html/wp-content/plugins/wp-optimize/cache/ file-based-page-cache-functions.php on line 95 [30-Aug-2020 16:10:09 UTC] PHP Warning: mkdir(): Not a directory in /home/xxxxxx/public_html/wp-content/plugins/ wp-optimize/cache/file-based-page-cache-functions.php on line 95 * Thank you so much for any possible help you can provide! Viewing 4 replies - 1 through 4 (of 4 total) * [Harshad](https://wordpress.org/support/users/bornforphp/) * (@bornforphp) * [5 years, 9 months ago](https://wordpress.org/support/topic/help-for-php-errors/#post-13336874) * [@heesea](https://wordpress.org/support/users/heesea/) It looks like some core WP-Optimize files are missing, Can you please try to re-upload the plugin files via FTP/SFTP using FileZilla and check if it helps to fix the issue? * Thanks, Harshad * Thread Starter [heesea](https://wordpress.org/support/users/heesea/) * (@heesea) * [5 years, 9 months ago](https://wordpress.org/support/topic/help-for-php-errors/#post-13337129) * Thank you so much for your reply! I have uploaded the files through FTP and will check to see if the errors stop. * [Harshad](https://wordpress.org/support/users/bornforphp/) * (@bornforphp) * [5 years, 9 months ago](https://wordpress.org/support/topic/help-for-php-errors/#post-13348358) * [@heesea](https://wordpress.org/support/users/heesea/) Sure thing, do let us know if you encounter with any issues. * Thread Starter [heesea](https://wordpress.org/support/users/heesea/) * (@heesea) * [5 years, 9 months ago](https://wordpress.org/support/topic/help-for-php-errors/#post-13348570) * There haven’t been any more errors, so I believe it to be resolved. Thank you so much for your help. Viewing 4 replies - 1 through 4 (of 4 total) The topic ‘Help for php errors’ is closed to new replies. * ![](https://ps.w.org/wp-optimize/assets/icon-256x256.png?rev=1552899) * [WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance](https://wordpress.org/plugins/wp-optimize/) * [Frequently Asked Questions](https://wordpress.org/plugins/wp-optimize/#faq) * [Support Threads](https://wordpress.org/support/plugin/wp-optimize/) * [Active Topics](https://wordpress.org/support/plugin/wp-optimize/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/wp-optimize/unresolved/) * [Reviews](https://wordpress.org/support/plugin/wp-optimize/reviews/) * 4 replies * 2 participants * Last reply from: [heesea](https://wordpress.org/support/users/heesea/) * Last activity: [5 years, 9 months ago](https://wordpress.org/support/topic/help-for-php-errors/#post-13348570) * Status: resolved