Seem to have had the same problem but from 4.26 → 5.0. Removing all nested blueprint structs (structs in a struct) worked for me. Not sure why, but blueprint structs were definitely the culprit.
Seem to have had the same problem but from 4.26 → 5.0. Removing all nested blueprint structs (structs in a struct) worked for me. Not sure why, but blueprint structs were definitely the culprit.