Conflict with All In One WP Security

I installed the Rank Math SEO plugin, and already during the setup, 500 errors began to appear. I thought it was a problem with my hosting. But then everything got much worse. The new plugins search page was loading very slowly. Any plugins stopped deleting and installing, an error appeared.

I tried deactivating All-In-One Security (AIOS), then everything returned to its place instantly. After that, any plugins were being deleted and installed. Then I turned on AIOS again, but a critical error occurred, and my WordPress admin panel stopped working. This was fixed only by renaming the plugin folder through the hosting panel.

The same thing happened with the Rank Math SEO plugin. When it is disabled, All-In-One Security works fine, and other plugins are deleted and installed. But as soon as they start working together, a critical error occurs.

This error is present even when absolutely all AIOS settings are disabled, and absolutely all Rank Math SEO settings are disabled.

I am using:

• WordPress 6.2
• Rank Math SEO 1.0.111
• All In One WP Security 5.1.7

In the logs, I found such a critical memory exhaustion error:

[08-Apr-2023 16:01:16 UTC] PHP Fatal error:
Allowed memory size of 67108864 bytes exhausted
(tried to allocate 32768 bytes)
in /public_html/wp-content/plugins/
seo-by-rank-math/vendor/woocommerce/
action-scheduler/classes/abstracts/
ActionScheduler_Lock.php on line 1

Yes, I know that this can be fixed by increasing the memory through adding this line to wp-config.php file:

define( 'WP_MEMORY_LIMIT', '128M' );

But unfortunately, my hosting provider does not provide more PHP memory on the current plan. And I would like to fix this in another way.

I see that this error is caused by the WooCommerce Rank Math module, but I am not using WooCommerce. Is there any way to disable this script that causes this critical memory exhaustion error?

Thank you

• This topic was modified 1 year, 11 months ago by Max Shvedov. Reason: better view of code block text