WP - Update failed. The response is not a valid JSON response + the table is missing from the database

Issue

I got an error refreshing information on a page on my WordPress site.

Error(WP - Update failed. The response is not a valid JSON response):

Console:

Network:

Also, for some reason, a table with links disappears from the database. I checked the rest and they work (for example, a table with links and a table with users)

How do I fix this error?

Solution

Need to change a type of url to simple(where ?page=1). And problem is resolved.

Answered By - KvaksMan play