This might be a bug in the BuddyPress Docs plugin which adds collaborative workspaces to your BuddyPress community. You can try to deactivate and delete the plugin from your WordPress dashboard and see if that solves the problem.
Alternatively, you can also try to completely delete, reset or reinstall BuddyPress by following these steps:
1/ Change to another theme than BuddyPress. 2/ Deactivate BuddyPress plugin. 3/ Delete it from Network admin (and make sure it exists no more in the directory). 4/ Deleting wp-bp tables.
