On Windows 10, Minecraft (Microsft Store > Downloads and Updates give version number 1.12.28.0) (in-game version show v1.12.0)
have exported the world and imported the world, with the same error message
have exported the world and imported on another account, results in the same error
i deleted level.dat and renamed level.dat_old to level.dat, results in the same error
i checked the /db folder, but that didn't make any sense to me.
also tried to compare json files with working versions of minecraft, but couldn't find any relation or clue what causes the error.
I haven't tested this on Switch
I have no clue on how to revert back to a different version of Minecraft (on bedrock) in Windows 10 so I could do some more tests.
Rano
On Windows 10, Minecraft (Microsft Store > Downloads and Updates give version number 1.12.28.0) (in-game version show v1.12.0)
have exported the world and imported the world, with the same error message
have exported the world and imported on another account, results in the same error
i deleted level.dat and renamed level.dat_old to level.dat, results in the same error
i checked the /db folder, but that didn't make any sense to me.
also tried to compare json files with working versions of minecraft, but couldn't find any relation or clue what causes the error.
I haven't tested this on Switch
I have no clue on how to revert back to a different version of Minecraft (on bedrock) in Windows 10 so I could do some more tests.