Also it seems that site AND forum uses wp-rocket cache, and could also create problem. Just an idea. No matter what some say, NO CACHE is working righ...

@sofy could be also this: "MySQL Version 5.6.43" ?

You can ask the theme developer or probably it is easier to try some new themes. There are some free ones that are superb.

@digitalmedic You are welcome. Inform the client also that he will get the phenomenal and free support here by wpForo team, regular updates and also...

The "client" apparently has no idea how all this works. That wpForo is not a standalone script, that Wordpress is the CORE, web servers are involved, ...

Nope, works just fine. Can/want to post a url so we can check ?

Because we have seen it happen several times and because urls are "involved" with permalinks etc etc.

This is a rather "unusual" url, can you test in a proper domain ?

You mean your DEBUG.LOG is empty or doesn't exist or what ? Disable and re-enable wpForo. Then forget the wpForo for a while. This step is to see if y...

Well there are several ways to modify your wp-config.php, via FTP or via your Hosting Control Panel file manager. If you have no idea for those 2 ways...

PLEASE DELETE YOUR ABOVE POST. DO NOT POST SUCH DETAILS PUBLICLY !!!!

Please read it. Put this define( 'WP_DEBUG', true );define( 'WP_DEBUG_LOG', true );in your wp-config.php and after a while check the debug.log located...

That mean that you have some problems in your dashboard of WP, probably some js errors. What does the F12 of your browser shows ? Also enable all Word...

That is just a notice for the future, it is not causing the error. I guess you have to ask your hosting provider what is the EXACT error from their lo...