How do I fix 'The asset '/Game/Maps/Level' (Level.umap) failed to save.' ?

Of course when I’m trying to reproduce it to get logs it takes it a while to reproduce, but here are the logs I got when it finally happened again:

Cmd: OBJ SAVEPACKAGE PACKAGE=“/Game/Maps/Level_TUT/Level_Tut_Logic” FILE=“I:/Projects/game/Content/Maps/Level_TUT/Level_Tut_Logic.umap” SILENT=true AUTOSAVING=false KEEPDIRTY=false
LogUObjectHash: Compacting FUObjectHashTables data took 13.71ms
LogSavePackage: Moving ‘I:/Projects/game/Saved/Level_Tut_LogicAA737C07411B48705BC70BA9B60BC21A.tmp’ to ‘I:/Projects/game/Content/Maps/Level_TUT/Level_Tut_Logic.umap’
LogFileManager: Warning: DeleteFile was unable to delete ‘I:/Projects/game/Content/Maps/Level_TUT/Level_Tut_Logic.umap’, retrying in .5s…
LogFileManager: Error: Error deleting file ‘I:/Projects/game/Content/Maps/Level_TUT/Level_Tut_Logic.umap’.
LogSavePackage: Error: Error saving ‘I:/Projects/game/Content/Maps/Level_TUT/Level_Tut_Logic.umap’
EditorErrors: New page: Save Output
EditorErrors: Warning: Error saving ‘I:/Projects/game/Content/Maps/Level_TUT/Level_Tut_Logic.umap’