Can't launch UEFN session

I solved the error about the save the world files, had to enable and install it from the epic games launcher, also verified the uefn files again

But now the issue remaining is this one when i try to launch, it loads but disconnects, then shows these warnings:

LogUObjectGlobals: Warning: Failed to find object ‘Class /Script/MediaPlate.MediaPlateResource’
LogNet: Warning: Channel name will be serialized as a string: ValkyrieBeacon
LogHttp: Warning: HttpRetry: Resetting log verbosity to Warning due to requests being retried

When I try to load the second time, it shows this:

LogOnlineSession: Warning: MCP: FindSingleSession request failed. Invalid response. code=404 error={
“errorCode” : “errors.com.epicgames.modules.matchmaking.unknown_session”,
“errorMessage” : “unknown session id d82f903575c04491a649be0d813ccad2”,
“messageVars” : [ “d82f903575c04491a649be0d813ccad2” ],
“numericErrorCode” : 12101,
“originatingService” : “fortnite”,
“intent” : “prod-live”
}
LogOnline: Warning: OSS: Async task ‘FOnlineAsyncTaskMcpFindSingleSession bWasSuccessful: 0’ failed in 0.123488 seconds
LogValkyrieAccount: [UValkyrieOnlineInstance::ApplyUserPreferredQoSRegion] Region Auto: BR
LogValkyrie: ProjectSizeRequest::GetDependencyDownloadSizes for de8ab965-4682-0b7f-c5c4-778351763f50
LogValkyrie: ProjectSizeRequest::Completed for de8ab965-4682-0b7f-c5c4-778351763f50
LogNet: Warning: Channel name will be serialized as a string: ValkyrieBeacon