Title: Session Errors Last modified: September 26, 2016 --- # Session Errors * Resolved [payfast](https://wordpress.org/support/users/payfast/) * (@payfast) * [9 years, 8 months ago](https://wordpress.org/support/topic/session-errors/) * Running wp 4.6.1 and hub theme from woothemes. Receiving the errors seen below * ``` [Mon Sep 26 09:00:43 2016] [error] [client 66.249.92.134] PHP Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /srv/webroots/obfuscated/web/www/wp-includes/functions.php:3598) in /srv/webroots/obfuscated/web/www/wp-content/plugins/custom-sidebars/inc/class-custom-sidebars-explain.php on line 55, referer: https://obfuscated/shopping-carts/woocommerce/ [Mon Sep 26 09:00:44 2016] [error] [client 41.79.23.218] PHP Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /srv/webroots/obfuscated/web/www/wp-includes/functions.php:3598) in /srv/webroots/obfuscated/web/www/wp-content/plugins/custom-sidebars/inc/class-custom-sidebars-explain.php on line 55, referer: https://www.obfuscated/ [Mon Sep 26 09:00:45 2016] [error] [client 41.13.88.30] PHP Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /srv/webroots/obfuscated/web/www/wp-includes/functions.php:3598) in /srv/webroots/obfuscated/web/www/wp-content/plugins/custom-sidebars/inc/class-custom-sidebars-explain.php on line 55, referer: https://www.obfuscated/what-is-payfast/ [Mon Sep 26 09:00:49 2016] [error] [client 197.159.37.186] PHP Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /srv/webroots/obfuscated/web/www/wp-includes/functions.php:3598) in /srv/webroots/obfuscated/web/www/wp-content/plugins/custom-sidebars/inc/class-custom-sidebars-explain.php on line 55, referer: https://www.obfuscated/ [Mon Sep 26 09:00:54 2016] [error] [client 197.159.37.186] PHP Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /srv/webroots/obfuscated/web/www/wp-includes/functions.php:3598) in /srv/webroots/obfuscated/web/www/wp-content/plugins/custom-sidebars/inc/class-custom-sidebars-explain.php on line 55, referer: https://www.obfuscated/integration/ [Mon Sep 26 09:00:55 2016] [error] [client 41.150.142.11] PHP Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /srv/webroots/obfuscated/web/www/wp-includes/functions.php:3598) in /srv/webroots/obfuscated/web/www/wp-content/plugins/custom-sidebars/inc/class-custom-sidebars-explain.php on line 55, referer: https://www.obfuscated/ [Mon Sep 26 09:00:56 2016] [error] [client 197.159.37.186] PHP Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /srv/webroots/obfuscated/web/www/wp-includes/functions.php:3598) in /srv/webroots/obfuscated/web/www/wp-content/plugins/custom-sidebars/inc/class-custom-sidebars-explain.php on line 55, referer: https://www.obfuscated/what-is-payfast/ [Mon Sep 26 09:01:01 2016] [error] [client 197.159.37.186] PHP Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /srv/webroots/obfuscated/web/www/wp-includes/functions.php:3598) in /srv/webroots/obfuscated/web/www/wp-content/plugins/custom-sidebars/inc/class-custom-sidebars-explain.php on line 55, referer: https://www.obfuscated/ [Mon Sep 26 09:01:06 2016] [error] [client 197.159.37.186] PHP Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /srv/webroots/obfuscated/web/www/wp-includes/functions.php:3598) in /srv/webroots/obfuscated/web/www/wp-content/plugins/custom-sidebars/inc/class-custom-sidebars-explain.php on line 55, referer: https://www.obfuscated/what-is-payfast/ [Mon Sep 26 09:01:08 2016] [error] [client 197.159.37.186] PHP Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /srv/webroots/obfuscated/web/www/wp-includes/functions.php:3598) in /srv/webroots/obfuscated/web/www/wp-content/plugins/custom-sidebars/inc/class-custom-sidebars-explain.php on line 55, referer: https://www.XXXXXX.co.za/integration/ ``` * Removed it by eliminating the session_start block from offending custom sidebars as an interim solution. Viewing 4 replies - 1 through 4 (of 4 total) * [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * (@wpmudev-support9) * [9 years, 8 months ago](https://wordpress.org/support/topic/session-errors/#post-8221200) * Hello [@payfast](https://wordpress.org/support/users/payfast/), I trust you are doing well today! * I can’t replicate the same warning on my site with WordPress 4.6.1 and Custom Sidebars 2.1.1.1. * The plugin might be conflicting with a theme activated on your site or with a cache plugin. * If this will happen again, can you replicate the same when only the Custom Sidebars plugin is activated? * Please let us know. * Kind regards, Nastia * [ChrisL](https://wordpress.org/support/users/chrslcy/) * (@chrslcy) * [9 years, 8 months ago](https://wordpress.org/support/topic/session-errors/#post-8238387) * I’m getting session errors too. These only began when I started work on a second website on the same server using Custom Sidebars plugin. If I open the problem site in another browser, the errors disappear, but if I then open both sites in the new browser, the error appears. If I close and reopen the browser, the errors disappear until both sites are opened again. * Is this possibly an issue to do with both websites using the same tmp folder for sessions? * Here’s my error: * Warning: session_start(): open(/tmp/sess_d5caf1de6f0f5d6d56d6da174e39df42, O_RDWR) failed: Permission denied (13) in /home/stjoseph/public_html/wp-content/plugins/ custom-sidebars/inc/external/wpmu-lib/inc/class-thelib.php on line 145 * Warning: session_start(): Cannot send session cache limiter – headers already sent (output started at /home/stjoseph/public_html/wp-content/plugins/custom- sidebars/inc/external/wpmu-lib/inc/class-thelib.php:145) in /home/stjoseph/public_html/ wp-content/plugins/custom-sidebars/inc/external/wpmu-lib/inc/class-thelib.php on line 145 * [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/) * (@wpmudev-support9) * [9 years, 8 months ago](https://wordpress.org/support/topic/session-errors/#post-8241813) * Hello [@chrslcy](https://wordpress.org/support/users/chrslcy/), I trust you are doing well! * Per forums regulations please create a new thread. Based on the error, it sounds like your temporary folder isn’t writable by Custom Sidebars Pro, but why exactly is what we’ll have to find out. * Please run a quick check for a conflict with plugins on your site, and please let us know the results in a new thread. * Kind regards, Nastia * [ChrisL](https://wordpress.org/support/users/chrslcy/) * (@chrslcy) * [9 years, 8 months ago](https://wordpress.org/support/topic/session-errors/#post-8246529) * New thread created here as requested: [https://wordpress.org/support/topic/session-errors-new-thread/](https://wordpress.org/support/topic/session-errors-new-thread/) Viewing 4 replies - 1 through 4 (of 4 total) The topic ‘Session Errors’ is closed to new replies. * ![](https://ps.w.org/custom-sidebars/assets/icon-256x256.png?rev=1414065) * [Custom Sidebars - Dynamic Sidebar Classic Widget Area Manager](https://wordpress.org/plugins/custom-sidebars/) * [Frequently Asked Questions](https://wordpress.org/plugins/custom-sidebars/#faq) * [Support Threads](https://wordpress.org/support/plugin/custom-sidebars/) * [Active Topics](https://wordpress.org/support/plugin/custom-sidebars/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/custom-sidebars/unresolved/) * [Reviews](https://wordpress.org/support/plugin/custom-sidebars/reviews/) * 4 replies * 3 participants * Last reply from: [ChrisL](https://wordpress.org/support/users/chrslcy/) * Last activity: [9 years, 8 months ago](https://wordpress.org/support/topic/session-errors/#post-8246529) * Status: resolved