Same on 1770. Also restarted my system, file checks, etc. It is persistent. Happens everytime I try to load into the game.

Fatal error: [File:C:\B\tech_exiles\code\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading.cpp] [Line: 6738]
LoadPackageAsync failed to begin to load a package BP_Event_Q4_2021_2 because the supplied package name was neither a valid long package name nor a filename of a map within a content folder: ‘’

!0x0000000000000000