Crashes on re-enter

[Varg95]

Describe the bug

A clear and concise description of what the bug is. when i flew around the world i saw no volcanoes when i restarted minecraft and enterd the world it crashed.

To Reproduce

Steps to reproduce the behavior:
4. See error

Screenshots

If applicable, add screenshots to help explain your problem.

Versions:

• Lava Dynamics: 5.6.12
• Version of Forge you are using: 1.12.2-14.23.5. 2847

Logs (REQUIRED):

• Crash Report: https://pastebin.com/nVSUMRZZ
• Latest Log: too big for paste bin
• Debug Log: too big for paste bin

Storage Files (REQUIRED)

i looked for these but didnt find them.

[eleksploded]

The fact that those files do not exist is most likely why it is crashing. They should be in the world file, would you mind double checking for them? If not, I do need a log to find the actual problem, just a crash report doesn't help that much.