Opening AnimBP generates error

And before that:
LogFileManager: Warning: MoveFile was unable to move ‘../../../../Unreal Projects/PortalsOfOrion/Content/Blueprints/Character/Animation/OrionAnimBP.uasset’ to ‘../../../../Unreal Projects/PortalsOfOrion/Saved/OrionAnimBP3DA8BE644328D64961A417A3EDF67D70.tmp’ (Error Code 32), retrying in .5s..