Re: [Resolved] Call to undefined function bb_get_id_from_slug()
[RESOLVED] Root cause was meta_value in table wp_bb_meta remain unchanged after migration to other site.
Scenario: I had similar problem on forum. I tried removing and re-installing many times. Re-installing means copying my complete wordpress with plugin buddypress folder still didn’t worked. Sometimes i used to get HTTP Error 403 Forbidden while accessing forums. This was error was esp when i used existing installation option from admin page in forums setup under buddypress.
But when I click on setup new bbpress installation I could post on forums but could not see topics.
REASON: I checked the database for table wp_bb_forums and it had entry of new topic, then I checked wp_bb_meta in that incorrect meta value was setup for field meta_value where meta_key is uri , I corrected the url stored in meta_value it was url of my previous website name. I had done migration to new site so the problem. If you face similar conditions just check these values.