Title: /wp-admin error 500 after update plugin
Last modified: December 12, 2025

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# /wp-admin error 500 after update plugin

 *  Resolved [vasilisweb](https://wordpress.org/support/users/vasilisweb/)
 * (@vasilisweb)
 * [6 months ago](https://wordpress.org/support/topic/wp-admin-error-500-after-update-plugin/)
 * Greetings,
 * After updating the plugin, I started receiving a 500 error on the **/wp-admin**
   area, while all other pages on the site continue to function normally.
 * When I temporarily deactivated the plugin, the **/wp-admin** dashboard loaded
   without issues. However, once I reactivated the plugin, the 500 error returned.
   The debug log does not report any related errors.
 * Please advise on how to proceed.

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

 *  Plugin Support [MM Aurangajeb](https://wordpress.org/support/users/aurangajeb/)
 * (@aurangajeb)
 * [5 months, 3 weeks ago](https://wordpress.org/support/topic/wp-admin-error-500-after-update-plugin/#post-18757102)
 * Hi [@vasilisweb](https://wordpress.org/support/users/vasilisweb/) ,
 * Thanks for reaching out.
 * I’m sorry to hear you’re running into a 500 error after the update. I understand
   how frustrating it is to lose access to your dashboard, but we’ll certainly help
   you get this sorted out.
 * Since the issue is isolated to the `/wp-admin` area and resolves when AIOSEO 
   is deactivated, this often points to either PHP memory exhaustion or a conflict
   with another active plugin.
 * You mentioned the debug log is empty. Because a 500 error is a fatal server error,
   the crash can happen so quickly (often due to running out of memory) that WordPress
   doesn’t have time to write the error to the `debug.log` file.
 * Please try the following steps to troubleshoot:
    1. **Increase PHP Memory Limit:**
       This is the most common cause for backend crashes
       after an update. Please try increasing your WordPress memory limit to ensure
       the server has enough resources. You can do this by adding the following line
       to your `wp-config.php` file, right before the line that says “`That's all, 
       stop editing`“:
 * `define( 'WP_MEMORY_LIMIT', '512M' );`or above.
    2. **Check Server-Level Logs:**
       If increasing the memory doesn’t work, please check
       if the error is recorded in your server’s main Apache or Nginx error log. If
       you’re unsure where to find this, your **hosting provider** can locate it for
       you. This log is crucial, as it will show the specific fatal error causing the
       crash.
 * Also, please double-check that you’ve followed the standard method to check the`
   debug.log`, as outlined here: [https://aioseo.com/docs/how-to-enable-debugging-in-wordpress/](https://aioseo.com/docs/how-to-enable-debugging-in-wordpress/)
 * Please let me know if increasing the memory resolves the issue or if you are 
   able to retrieve an error message from the server logs.
 * I’m looking forward to hearing from you!
 *  Thread Starter [vasilisweb](https://wordpress.org/support/users/vasilisweb/)
 * (@vasilisweb)
 * [5 months, 3 weeks ago](https://wordpress.org/support/topic/wp-admin-error-500-after-update-plugin/#post-18758951)
 * It turned out that it wasn’t a PHP Memory issue. Instead, it was a database-related
   problem: the system was attempting to write a transient to the `wp_options` table,
   but this failed due to the `max_allowed_packet` limit, compounded by constraints
   introduced by another plugin.
 * Sorry for the inconvenience and thank you for your support.
 *  Plugin Support [MM Aurangajeb](https://wordpress.org/support/users/aurangajeb/)
 * (@aurangajeb)
 * [5 months, 3 weeks ago](https://wordpress.org/support/topic/wp-admin-error-500-after-update-plugin/#post-18760093)
 * Hi [@vasilisweb](https://wordpress.org/support/users/vasilisweb/),
 * I appreciate your update and follow-up. I’m happy to hear that your website’s
   problem has been fixed!
 * Thanks!

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

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## Tags

 * [500 error](https://wordpress.org/support/topic-tag/500-error/)
 * [all in one seo](https://wordpress.org/support/topic-tag/all-in-one-seo/)
 * [wp-admin](https://wordpress.org/support/topic-tag/wp-admin/)

 * 3 replies
 * 2 participants
 * Last reply from: [MM Aurangajeb](https://wordpress.org/support/users/aurangajeb/)
 * Last activity: [5 months, 3 weeks ago](https://wordpress.org/support/topic/wp-admin-error-500-after-update-plugin/#post-18760093)
 * Status: resolved