Plugin Conflict

Hi Guys,
I use Divi for my site, and ever since the last two updates i have been experiencing and issue with saving my work when building on the front end.
I have followed the guidelines in as such i have gone through every plugin that i use and it only happens when i have Rankmath active.

The error reads as follows:
An error occurred whilst saving your page.
Various problems can cause a save to fail, such as lack of server resources, firewall blockages, plugin conflicts or server misconfiguration. You can try again, or you can download a backup of your usaved page by clicking Download Backup. Backups can be restored using the portability system while editing your page.
Contacting your host and asking them to increase the following PHP variables may help: memory limit, max_execution time, upload _max_filesize, max_input_time, maz_input_vars. In addition, auditing your firewall error log (such as Modsecurity) may reveal false positives that are preventing saves from completing.
Lastly it is recommended that you temporarily disable all WordPress plugins and browser extensions and try to save again to determine if something is causing a conflict.

I am using Wordfence security, and have as mentioned gone through the process of elimination with my plugins. Also as mentioned the version of RM two versions previous didn’t cause me this issue.

Can you advise accordingly please.

Regards

Paul Holmes