Minecraft crashes when returning from nether

Minecraft Windows 10 edition crashes when returning from the nether, and now when trying to reopen the world it crashes the game again. All other worlds work except the corrupted one. Issue happened before with a glitched chest which crashed the game when opened. I've tried backing up the world and reinstalling minecraft, but to no avail. Please help as I have put a lot of time and effort into this world.