Problem with group permissions

[Papy___]

Hello,
I have XF version 2.3.7 with the Resource Manager module.When I try to modify group permissions to define forum access, I get this message, and the changes don't apply.
I have the same issue with Resource Manager permissions.


when I look at the console I have this



I'm the main admin, so I should have all the rights, so I don't understand where the problem could be coming from.
Thank you for your help....
Problem with group permissions

free plugins
minecraft paid for free
mcmarket
mc-market
free minecraft paid plugins
free minecraft plugins
spigotmc
SpigotMC
aac free
ewg free
Minecraft Premium Plugins
ewg free download
litebans free
epicworldgenerator free
free schematics
leaked schematics minecraft
schematics
schematics leaked
schematics free
minecraft schematics free
paid minecraft schematics free
paid minecraft schematics for free
free cracked plugins
free cracked minecraft plugins
plugins
featherboard download
featherboard plugin download
antiaura download
xenforo leaked
xenforo for free
xenforo addons