The logs shows that verse push is finished but it destroys the session, then it shows Valkyrie Beacon Connected and then it stays loading indefinetly:
LOG:
LogValkyrieSummary: Checking for if the project can be uploaded
LogValkyrieSummary: RPCing Verse upload request to server
LogValkyrie: Verse Refresh succeeded.
LogValkyrieSummary: Destroying Valkyrie Beacon
LogNet: Warning: Channel name will be serialized as a string: ValkyrieBeacon
LogValkyrieSummary: Valkyrie Beacon Connected!
LogValkyrieSummary: Connected to Session: fb5e57e77c514a6b8d01a43f4f4b40fe
After that you have to close UEFN, close Fortnite and restart everything.