This happened to me when I died in the end on MCPE in the world that I had like 100 hours in. I made a backup first. Then I tried literally everything, it took me like 2 hours. And now I can't thank ArifMcpeXd842 enough for his comment, because that saved my world.
The fix on mobile (android):
Open the world
When the loading stuck, quit the game/open recent app tab (but do not remove Minecraft from recent app)
Open Minecraft again, and you should be in the world again.
EverKnight
This happened to me when I died in the end on MCPE in the world that I had like 100 hours in. I made a backup first. Then I tried literally everything, it took me like 2 hours. And now I can't thank ArifMcpeXd842 enough for his comment, because that saved my world.
The fix on mobile (android):
Open the world
When the loading stuck, quit the game/open recent app tab (but do not remove Minecraft from recent app)
Open Minecraft again, and you should be in the world again.