Now this error pops up for me as well, it never did before. I tried deleting valkyrieuploadtemp, restarted UEFN and it still pops up
FORT-977350 has been ‘Closed’ as a duplicate of an existing known issue. Origin Issue: FORT-940617
FORT-940617’s status has changed to ‘Ready for QA’. A member of the QA department is investigating the issue.