Oh no! Crashing is no good. Are you updated to the latest version? Uninstalling and reinstalling may be of some assistance here. Let us know if you've tried that already and how it goes! ^AM

If you have an older Android, make sure your phone has the required specifications and restart your device once you have uninstalled/reinstalled. Is the issue just happening on one world? Does the crash occur across all worlds or saves? ^AM