Title: Session errors (new thread) Last modified: October 3, 2016 --- # Session errors (new thread) * Resolved [ChrisL](https://wordpress.org/support/users/chrslcy/) * (@chrslcy) * [9 years, 8 months ago](https://wordpress.org/support/topic/session-errors-new-thread/) * (New thread created as requested) * I’m getting session errors. 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 don’t appear, but if I then open both sites in the new browser, the error appears in the second site. If I close and reopen the browser, the errors disappear until both sites are opened again. * Regarding plugin conflicts, I have just run your plugin on two fresh installs of WP running only Custom Sidebars plugin (no other plugins activated) and the Twenty Fifteen theme. The session errors still occur. If I delete the session cookie from the browser, the errors temporarily disappear until both sites are opened in same browser. * Here’s my error: * Warning: session_start(): open(/tmp/sess_bba820086c60c2692beec7cb94849b83, O_RDWR) failed: Permission denied (13) in /home/aaa2/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/aaa2/public_html/wp-content/plugins/custom-sidebars/ inc/external/wpmu-lib/inc/class-thelib.php:145) in /home/aaa2/public_html/wp- content/plugins/custom-sidebars/inc/external/wpmu-lib/inc/class-thelib.php on line 145 * Warning: Cannot modify header information – headers already sent by (output started at /home/aaa2/public_html/wp-content/plugins/custom-sidebars/inc/external/wpmu- lib/inc/class-thelib.php:145) in /home/aaa2/public_html/wp-includes/option.php on line 823 * Warning: Cannot modify header information – headers already sent by (output started at /home/aaa2/public_html/wp-content/plugins/custom-sidebars/inc/external/wpmu- lib/inc/class-thelib.php:145) in /home/aaa2/public_html/wp-includes/option.php on line 824 Viewing 9 replies - 1 through 9 (of 9 total) * [Predrag – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support1/) * (@wpmudev-support1) * [9 years, 8 months ago](https://wordpress.org/support/topic/session-errors-new-thread/#post-8255060) * Hey Chris, * Hope you’re well 🙂 * Thank for the report, it does sound strange though and I don’t remember encountering something like this before… * I tried replicating this on my end but was unable to do so, could you tell me where exactly those errors show up or better yet grab me a screenshot of the errors on your site? * Cheers, Predrag * Thread Starter [ChrisL](https://wordpress.org/support/users/chrslcy/) * (@chrslcy) * [9 years, 8 months ago](https://wordpress.org/support/topic/session-errors-new-thread/#post-8256521) * Hi Pretrag * You can view the two installations here: [http://185.77.65.186/~aaa1/](http://185.77.65.186/~aaa1/) [http://185.77.65.186/~aaa2/](http://185.77.65.186/~aaa2/) * You may need to refresh the pages to see the error. * The error appears both on the frontend and admin area of the affected site. Screenshots here: [https://postimg.org/gallery/muxkvdi0/](https://postimg.org/gallery/muxkvdi0/) * Chris * [Predrag – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support1/) * (@wpmudev-support1) * [9 years, 8 months ago](https://wordpress.org/support/topic/session-errors-new-thread/#post-8259133) * Hey Chris, * Thanks a lot for all the details provided, even though I’m still unable to replicate this on my end but I have collected all the info I could and forwarded it to our developers so they can check what can be done about this. * Cheers, Predrag * Thread Starter [ChrisL](https://wordpress.org/support/users/chrslcy/) * (@chrslcy) * [9 years, 6 months ago](https://wordpress.org/support/topic/session-errors-new-thread/#post-8551903) * Hi Predrag, * It’s over two months since I posted about this issue. I’ve updated to the latest version of WP and Custom Sidebars, but the issue still persists. * Any news from the developers on a resolution to the session errors for two sites on the same server running Custom Sidebars? * For example, when these two sites are simultaneously opened in Chrome or Firefox: [http://185.77.65.186/~aaa1/](http://185.77.65.186/~aaa1/) [http://185.77.65.186/~aaa2/](http://185.77.65.186/~aaa2/) * Thanks, * Chris * [Predrag – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support1/) * (@wpmudev-support1) * [9 years, 5 months ago](https://wordpress.org/support/topic/session-errors-new-thread/#post-8568248) * Hi Chris, * I’m afraid that we still don’t have any additional info about this issue because on none of the tests sites we tried replicating the issue this didn’t happen. * It looks like this is specific to your installation, probably server configuration but I’ll try pinging the devs again to see if they have any further info. * Cheers, Predrag * [Predrag – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support1/) * (@wpmudev-support1) * [9 years, 5 months ago](https://wordpress.org/support/topic/session-errors-new-thread/#post-8593281) * Hi Chris, * A bit of an update here, we released version 2.1.1.8 that should be addressing this issue but since we were stil unable to replicate the issue on our end we would appreicate if you could give it a go and let us know if the issue is still there. * Cheers, Predrag * Thread Starter [ChrisL](https://wordpress.org/support/users/chrslcy/) * (@chrslcy) * [9 years, 5 months ago](https://wordpress.org/support/topic/session-errors-new-thread/#post-8593484) * Hi Predrag, * I very much appreciate that you are trying to resolve this issue. It’s a great plugin, but currently unusable for sites sharing the same server. * I have updated the plugin on both sites (listed above) and tested from this end. Unfortunately, still getting the same issue: * ``` Warning: session_start(): open(/tmp/sess_3d5295ac73ae3188765926ca9c8800c8, O_RDWR) failed: Permission denied (13) in /home/aaa1/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/aaa1/public_html/wp-content/plugins/custom-sidebars/inc/external/wpmu-lib/inc/class-thelib.php:145) in /home/aaa1/public_html/wp-content/plugins/custom-sidebars/inc/external/wpmu-lib/inc/class-thelib.php on line 145 ``` * Thanks all the same, * Chris * [Predrag – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support1/) * (@wpmudev-support1) * [9 years, 5 months ago](https://wordpress.org/support/topic/session-errors-new-thread/#post-8593693) * Hi Chris, * Thanks for checking, back to drawing board I guess 🙂 * I’ve forwarded the details to developer. * Cheers, Predrag * Anonymous User 14230037 * (@anonymized-14230037) * [9 years ago](https://wordpress.org/support/topic/session-errors-new-thread/#post-9129268) * Amazing. * If I search for “Fatal PHP error wp-content/plugins/custom-sidebars/inc/external/ wpmu-lib/inc/class-thelib.php on line 145” I get 6850 results in Google… * Let that sink in. Six thousand reports. * Yet the answer from the dedicated, highly-skilled plugin developers at WPMUDEV is always the same. * “Gee. We can’t replicate the issue. Maybe you can fix it and post the solution.” * FYI, if you’re looking for “Custom Sidebar Plugin,” there are half a dozen free alternatives. I’ve tried three of them, and none had any of this hassle with session.save_path or writing to the /tmp folder. - This reply was modified 9 years ago by Anonymous User 14230037. Viewing 9 replies - 1 through 9 (of 9 total) The topic ‘Session errors (new thread)’ 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/) * 9 replies * 3 participants * Last reply from: Anonymous User 14230037 * Last activity: [9 years ago](https://wordpress.org/support/topic/session-errors-new-thread/#post-9129268) * Status: resolved