The mod does not take ieroglify ©

In General, finished with the mod and then comes a random visitor to the server with the nickname and did not react to his greeting. Naturally I decided to check myself and it turned out so that I, too, did not react.

Decided to experiment and it turned out that team !players !admins !and statistics, etc., Mod gives errors with this nickname is such :

[18.10.18 17:04: 29] notification: notification at Home/uu/srcds377/adminmod/daemon/motors/Quake3/KV/rconcommands.php: 375 => iconv (): detected an illegal character in input string

[18.10.18 17: 04: 32] information: player ' 'command executed:' admins ', PID: 0, ID: 2310346616155629264

[18.10.18 17:04: 32] notification: notification at Home/uu/srcds377/adminmod/daemon/motors/Quake3/KV/rconcommands.php: 375 => iconv (): detected an illegal character in input string

Will you answer the question? Just because of this I can not install your mod normally.

Where do you give them permission? or remove them from the server