Our memory limit is currently set at 512MB, PHP limit has been increased from 60 to 90. We're on a premium 4GB/2CPU VPS with Cloudways so I'm confident this isn't resource related.
We get the same error from ticking 10 or even just 1 item and trying to 'Approve translation reviews'. I've tried random items from the list to make sure it's not just the first in the list that have a problem. There are currently 120 that we need to bulk approve - these work if we click 'Review' next to each item and approve one by one.
I would like to request temporary access (wp-admin and FTP) to your site to test the issue.
(preferably to a test site where the problem has been replicated if possible)
**Before we proceed It is necessary to take FULL BACKUP of your database and your website. Providing us with access, you agree that a backup has been taken **
I often use the Duplicator plugin for this purpose: http://wordpress.org/plugins/duplicator/
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The information you enter is private which means only you and I have access to it.
NOTE: If access to the live site is not possible and the staging site does not exist please provide me with a duplicator package created with the duplicator plugin.
Did your site every use the Rankmath plugin before? Maybe some settings are left in the database, I have seen this cause issues before and it required re-installing the problematic plugin and fully removing it properly.
I'm afraid we've never used Rankmath, this is a new site in development and we've only used Yoast.
We did have over 300 translations to review here so some bulk approvals are working, I believe we were able to bulk approve all of the main page & post translations, it's the little details like Field Groups that are stuck. Not sure if that helps diagnose the issue.
If there is a way to manually approve/remove these in the database then that would work for us temporarily, we've decided to publish without reviewing so manually clearing this list would be fine for now.