Ok I did a reset plugins and now it's fixed.
I can't save settings in the ACP, though.
[Solved] Strange new Groups
Browsing in the ACP I found all these new groups :
Is it normal or temporary?
The problem is, I can't access to the save button in Categories Assses Control panel.
Ho, actually, by zooming out, I could see there is not Save button, but there is two "Registred users" group in the list.
Please update to latest, I messed up @ https://github.com/designcreateplay/NodeBB/issues/992 so we will refix this one properly by hardcoding administrators and registered-users to be visible only