when i play 1.8 and 1.79 and other ones it just doesnt load and crashes please fix these and i want to get into servers and it wont let me plase show me how at craftmine655@yahoo.com

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What I expected to happen was...:
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What actually happened was...:
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Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...i was going in to minecraft 1.79 and it just crashed every one i go to it crashes
3. ...