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Describe the crash
2 crashes, i went to the aether the first time then broke a berry bush and crashed. The second time i was building to a silver dungeon after going through one with no boss. it then crashed and brought me to the launcher.

To Reproduce
Steps to reproduce the behavior:

Idk the aether maybe?

Crash Log
Click "Get Link" from the crash and paste it here. Or post the log if it's a server.
crash-2020-02-22_20.49.21-server.txt

crash-2020-02-22_20.57.22-client.txt

Info (please complete the following information):

• Modpack Version: 2.76.1
• Server or Singleplayer: Single
• Version the world was created on: 2.76.1

Additional context
Add any other context about the problem here and your thoughts about what could have caused it.

Does your world perma crash?