nsufficient client permissions (failed on i_channel_min_depth) cant delte permission

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I got a problem on one of my friends server i am admin and i have this: insufficient client permissions (failed on i_channel_min_depth) i have found the problem but when i remove the permission it says i dont have permissions and my friend cant either. We try everything but we cant remove the... nsufficient client permissions (failed on i_channel_min_depth) cant delte permission