Unreal Learning kit wont build. .uasset has malformed tag

Couldn’t load the map at first caused by this error :
“The summary for the package ‘/Game/Megascans/3D_Plants/Thatching_Grass_uddmcgbia/MI_Thatching_Grass_uddmcgbia_4K’ is invalid. Check that the file is of the expected type and not corrupted.”

Checked the file and the MI was bugged. I then reimported it, but couldn’t properly save it. The next that happened when i tried to load my map was this error:
“Unable to load package ‘/Game/Maps/TestMap’. The end of package tag is not valid. Check that the file is of the expected type and not corrupted.”

Guess the whole file is corrupted now.