To Reproduce
Steps to reproduce the crash:

1. Add map
2. Start game
3. See that the time is setting to 0:00 after game start
4. Execute /teams nextMap command, because restart fixes everything

Versions (please complete the following information)

• Forge: 1.12.2-14.23.5.2768
• Flan's Mod: 5.6.0 beta 8

Crash Log
https://gist.github.com/LukLuk06/64f2b0c4a98b8c7e3d972f4b8ede8815

Additional context
This happens only in versions 5.x