Put the summary of the bug you're having here
What I expected to happen was when I opened the world, it would load in.
Describe what you thought should happen here
What actually happened was, the game crashed.
Describe what happened here
Steps to Reproduce:
1. Open Minecraft
2. Select "Single Player"
3. Select world, and hit "Play Selected World"
- duplicates
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MC-10167 Failed to check session lock, aborting
- Resolved