Every time I load up Minecraft bedrock edition, it randomly freezes and when I reload the app, it says it was a global resource failure

When I load up Minecraft Bedrock Edition, (IOS) it freezes and I have to reload the app, NO MATTER WHAT I DO. It says it's a global resource problem. I need help or I won't be able to play Minecraft on my iPad anymore, and I don't want to delete the app cuz I have some good worlds.