XF 2.3 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....

 

[Papy___]

@AndyB gave me the answer, thank you very much.You need to disable mod_security, just so you know.

 

[jeb35]

You don't need to disable it. You need to whitelist the rule that it is triggering. Your host can do this for you. Also @AndyB needs to start replying instead of messaging members.