[@robin-w Moderator 6 years, 6 months ago]

when you last reported it, I said
‘ok, I can only suggest that you revert to the standard tests
Themes
As a test switch to a default theme such as twentyfifteen, and see if this fixes.
Plugins
If that doesn’t work, also deactivate all plugins apart from bbpress and see if this fixes. if it does, re-enable one at a time to see which is causing the error.
Then come back@

you did not respond to that, so can’t really help further if you don’t do the tests 🙂