Critical error; comments; multisite

Hi!

I run a Multisite version of WP and now have a problem with comments.

The main/root version of the blog, gdamas.com, has no problems with comments. But the other versions (Multisite) show the same problem. For instance, in gdamas.com/pt

All sites are working regularly. I have access to everything (pages, files, database, etc.). The only problem is with comments in my other sites (subfolders, not subdomains).

When a person hits the button to submit a comment, a message appears saying that the site has a critical error, but it does not specify what it is. The person gets lost, in doubt, but in fact the comment has been published. But all the person will see is a page with a small box that shows that error message.

It is important to note that the problem does not occur with me, I mean, a logged in user, an admin.

This is so strange…

Suspecting something related to cache plugins, I deactivated and deleted WP Rocket. It was set to not show cached versions for logged in users. It didn’t work, and now I have no clue.

A few days ago I changed the main domain, so I had to change things in the database and in wp-config. I’ve checked everything now, but couldn’t find anything that would explain the problem.

Any light here would be very appreciated…

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