When I load up my survival world the screen freezes, turns white and then the game crashes.
My player is between two open doors placed right next to a nether portal. The whole thing is cased in obsidian except the block above each the door is planks.

I can export the word if that is needed.
I hopefully these pictures will help.

The darker picture is a print screen capture of the game.
The other picture is a recreation of what my player is stuck in.