can somebody tell me how to fix this error?

[daan24]

can somebody tell me how to fix this error?

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Petro-Engine-3 : Message
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SetRankClass(): undefined difficulty (1236800)
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[Chavez]

Is this from the editor? If so, looks like a script compile error which you didnt assing a script to a Player spawn. It must be a soldier, medic, machinegunner, ... etc.

[daan24]

thats the problem i assigned every player a script