As you can see in the screenshot i have error code this happen when i try to launch a session this occured because my pc crashed on me and then after i reopen uefn this whats happend

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Screenshot (63)
Screenshot (63)1280×1024 167 KB

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Greetings @OC_Stryker

Welcome to the Unreal Forum! This sounds like something might’ve became corrupted during the crash. I’d start by validating your UEFN Project Files. That may tell you which specific files are the problem areas. (I’d consider clearing your UEFN cache as well)