i would load a new world for 1.9 but i would see nothing but blue and the sun then my game would crash every time

so i would try to load a new world for 1.9

*What I expected to happen was for it to load and i could test out 1.9

*What actually was it kept crashing every time

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
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