Can't create/open worlds in MCPE 1.21.30 upon switching to external storage.

Upon switching to external storage in MCPE 1.21.30, I found out that apparently, no world can be created or loaded. I tried everything and yet it didn't work. I can only play the game in application mode. I checked if there was anything wrong in the Minecraft Worlds folder and there was my world sitting there as it should be. Upon creating worlds, I get this screen. I have also provided another attachment of me being unable to create a world in said conditions.