SAM incompatible

[VoLKov16t8]

[Srlion's Hook Library] lua/includes/modules/hook.lua:418: attempt to index local 'gm' (a number value)

1. internal_call - lua/includes/modules/hook.lua:418
2. Call - lua/includes/modules/hook.lua:428
   3. AddRestriction - lua/wuma/extentions/playerextention.lua:164
   4. AssignUsergroupRestrictions - lua/wuma/users.lua:36
   5. AssignRestrictions - lua/wuma/users.lua:25
   6. InitializeUser - lua/wuma/users.lua:12
   7. func - lua/wuma/users.lua:271
   8. internal_call - lua/includes/modules/hook.lua:409
   9. unknown - lua/includes/modules/hook.lua:428

this appears every time I set a rank for someone or someone enter to my server