SERVER ERROR: You've been kicked by the server: UnknownMid,

Login and menu works fine but as soon as I go to the room with the player object I get this error.

Any help would be greatly appreciated.

EDIT: Fixed it. It was on my end I didnt put the GMS object in the game room.
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ERROR in
action number 1
of Step Event0
for object obj_gms:

SERVER ERROR: You've been kicked by the server: UnknownMid,

Please note: This is a server-sided error message. To disable all GameMaker Server-errors, call gms_debug_hide_errors().
at gml_Script_XServer_step (line 408) - show_error("SERVER ERROR: " + XServer_readstring(_rr), false);
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stack frame is
gml_Script_XServer_step (line 408)
called from - gml_Script_gms_step (line