Hello Sonny,

Thank you for reaching out to us.

Please provide me a temporary WP-admin (administrator) user for your site where this happens, so we could log in and take a look ‘from the inside’ as that’s the most efficient way to see and resolve the issue. 

We do not interfere with any data or anything else except for the plugin (in case that’s a production version of the site), and of course, we do not provide login data to third parties. 

You can write credentials here just check PRIVATE Reply so nobody can see them except us.

Hello Sonny.

Thank you for the access but it's not needed at this point. There's this error on the page:

These errors can happen for a few reasons, but they always happen for server-side tables (MySQL, manual, or imported tables). Unfortunately, we can't help you resolve the issue since it doesn't tell us where it's coming from.

Check if you have any other errors, notices, or warnings in your console. If there are, resolve them first because they are interrupting wpDataTables' admin-ajax calls and the errors returned are referring to either bad Ajax or bad JSON response.

Another thing that could be causing this is cache. If the data is being cached on the page, the returned data is not the same, or not at least what wpDataTables is expecting to see, so the error occurs. Try clearing all cache from your website and browser, and then prevent the pages containing wpDataTables from being cached.

Last, it could be the data in the table(s) - if the data is not the type that it should be (for example, a non-numerical value in an integer or a float column), or if the data has been changed for a formula column. Try creating a new table from the source table and see if it's going to cause errors. If it doesn't (after excluding cache as the cause), look for differences between data, filters, etc.

I hope that helps.