Starting Session in UEFN impossible | Validation Error

[STAXX_FN]

Hey guys, I hope you can help me with this type of problem that only occured in just one of my maps. It seems to be a type of validation error.

So for a longer period of time I haven´t started a session in UEFN, but now when I click the starting session button it won´t stop loading, then a message pops up saying “Can´t start a game, Failed to resolve validation session result.”.
So now it´s literally not possible for me to start a session in my creative map.

Also the following error occurs in my Output-Log while trying to start a session:

LogValkyrie: Error: FlowStep_ResolveSessionCandidates(): Failed to resolve validation session with error [{
“host”: “content-service.bfda.live.use1a.on.epicgames.com”,
“method”: “GET”,
“path”: “/api/content/v4/validation/session/366cff72-d446-4a90-87bf-a21fd5133cc8/resolve”,
“errorCode”: “errors.com.epicgames.content-service.module_validation_session_invalid_operation”,
“errorMessage”: “session 366cff72-d446-4a90-87bf-a21fd5133cc8 cannot be resolved until all candidate validations have been trigerred”
}]

[Hardcawcanary]

In the 3 dot menu next to Launch Session, do a Validate Project and see if the message log has any insight,

[gismopatch]

I have this issue to, when i press the validate project, it says everything is up to date and there’s no problem but when i press launch session i get the Failed to resolve validation session message again

[Hima-Joker]

Even when I delete everything, it works normally.