Title: Custom Sidebar causing issue across all posts
Last modified: June 11, 2019

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# Custom Sidebar causing issue across all posts

 *  Resolved [soccerandtacos](https://wordpress.org/support/users/soccerandtacos/)
 * (@soccerandtacos)
 * [6 years, 11 months ago](https://wordpress.org/support/topic/custom-sidebar-causing-issue-across-all-posts/)
 * Hi! Your plugin has been a great addition to my site and has worked (mostly) 
   smoothly for the past year. However, yesterday I ran into an issue. WordPress
   is giving me an error at the top of the Posts page as well as within the edit
   screen for each individual post. The error is preventing me from fully editing
   my posts. Note that this does not appear to have impacted the front-end of previous
   posts.
 * The error reads:
 * Warning: session_start(): open(/tmp/sess_d8f0fd1a28f2ca97d683f61ca6f595ff, O_RDWR)
   failed: Permission denied (13) in /home4/wahicm0aeqla/public_html/wp-content/
   plugins/custom-sidebars/inc/external/wpmu-lib/inc/class-thelib.php on line 145
   
   Warning: session_start(): Failed to read session data: files (path: /tmp) in /
   home4/wahicm0aeqla/public_html/wp-content/plugins/custom-sidebars/inc/external/
   wpmu-lib/inc/class-thelib.php on line 145
 * As you can see, it’s finding an error with a file in the /custom-sidebars directory.
   I checked line 145 of the file /class-thelib.php, and it simply reads session_start();.
   The permissions for all files are 644, and 755 for folders.
 * Can you help me get to the bottom of this? Happy to provide more information 
   if you can give me some guidance on what you need and where I can locate it.
    -  This topic was modified 6 years, 11 months ago by [soccerandtacos](https://wordpress.org/support/users/soccerandtacos/).

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Thread Starter [soccerandtacos](https://wordpress.org/support/users/soccerandtacos/)
 * (@soccerandtacos)
 * [6 years, 11 months ago](https://wordpress.org/support/topic/custom-sidebar-causing-issue-across-all-posts/#post-11628924)
 * Also note that this might be preventing me from uploading new images. When I 
   attempt to upload images, I receive the error ‘missing temporary folder.’
 * I’ve attempted to rectify this with the usual solutions found online, e.g. here:
   [https://hostpapasupport.com/how-to-fix-missing-temporary-folder-error-in-wordpress/](https://hostpapasupport.com/how-to-fix-missing-temporary-folder-error-in-wordpress/)
 * But that only served to exacerbate the issue.
 * Any help would be greatly appreciated.
 *  Thread Starter [soccerandtacos](https://wordpress.org/support/users/soccerandtacos/)
 * (@soccerandtacos)
 * [6 years, 11 months ago](https://wordpress.org/support/topic/custom-sidebar-causing-issue-across-all-posts/#post-11628965)
 * Hi everyone – would you be able to help me with the issue described above? Let
   me know if you need any additional info. Thanks!!
    [@wpmudev-support6](https://wordpress.org/support/users/wpmudev-support6/)
   [@wpmudev-support1](https://wordpress.org/support/users/wpmudev-support1/) [@wpmudev-support2](https://wordpress.org/support/users/wpmudev-support2/)
 *  [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/)
 * (@wpmudev-support9)
 * [6 years, 11 months ago](https://wordpress.org/support/topic/custom-sidebar-causing-issue-across-all-posts/#post-11635014)
 * Hello [@soccerandtacos](https://wordpress.org/support/users/soccerandtacos/)
 * Hope you’re doing well!
 * The warning shows that permission denied to a temporary folder on your server.
   S nothing can be written to a temporary folder. Please try a solution described
   in here:
    [http://help.phpmelody.com/how-to-fix-warning-session_start-function-session-start-opentmpsess_-o_rdwr-failed/](http://help.phpmelody.com/how-to-fix-warning-session_start-function-session-start-opentmpsess_-o_rdwr-failed/)
 * If this will not work, please contact your hosting provider so they could have
   a closer look at this issue.
 * Hope this will help!
 * Kind regards,
    Nastia

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Custom Sidebar causing issue across all posts’ 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/)

 * 3 replies
 * 2 participants
 * Last reply from: [Imran – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support9/)
 * Last activity: [6 years, 11 months ago](https://wordpress.org/support/topic/custom-sidebar-causing-issue-across-all-posts/#post-11635014)
 * Status: resolved