ambiguous identifier means a field, class, etc with the same name already exists somewhere else and verse is confused which one you are referring to.
In your case something related to:
(/icecubestudio@fortnite.com/OGMovement2/Flag:)A
(/icecubestudio@fortnite.com/OGMovement2/OGLocker:)A
in og_locker.verseat line 32
So change the name of either and you should be good to go