Unable to load GameInstance Class

Greetings, we’ve encountering the same error, after each build, i do not understand whats wrong with it.
Can somebody tell me, please, how to deal with it?:confused: Please notice, that error is occured only when starting dedicated server, no complilaion/packaging errors occured…

And, as you can see GameInstanceClass blueprint defined under Maps&Modes. This blueprint, itself, inherited from custom CPP gameinstance implementation. Changing GameInstance class to the CPP class, instead of blueprint, takes no effect. The same error…

And here is custom game instance class…

Any help would be appreciated, thanks in advance

Is the only custom class that cannot be loaded? Are custom actors and controllers unaffected?

Have you been able to resolve this issue?