To Reproduce
Steps to reproduce the crash:

1. Install a big modpack with flan's and galacticraft
2. Try to access Solar System display from GC via a rocket (or via /dimensiontp)
3. Wait until server crashes if it does. (which didn't do it in the beggining)

Screenshots

Screenshots might not help with anything for the problem.

Versions (please complete the following information)

• Forge: 1.12.2 - 14.23.5.2854
• Flan's Mod: 5.5.2

Crash Log

https://gist.github.com/appollon41/a6118f74173b4767e7f7a48dbe62f8e9
https://gist.github.com/appollon41/f43a080bd7e3f71bf2de0aa78b54bf55
https://gist.github.com/appollon41/c1c50296f51eee3e272b7ef49a2cfe1d
https://gist.github.com/appollon41/37fca582569a840939b7f9d43c6e041f

Not sure if this will be useful, but each time the server stops answering, this comes in the console, before crash: https://gist.github.com/appollon41/cd3b47a75449da8561b47ba449e10b8a
I pasted the part when server doesn't answer anymore. Previous line is a working chat event.

Additional context

It happens when I try to access the solar system screen from GC when you launch a rocket. The server then stop computing until a single tick takes too much time for it, so it stops. I did contact MicDoodle, which is the GC creator at the same time, but the problem seems to come from Flan's. I joined 4 crash reports, because all of them are not exactly the same, but flan's issue comes back in first lines every time. I tried to access it with Flan's' teams activated and deactivated, since it seemed to be related, but nothing changes. Any idea or help would be appreciated, thanks.

Any idea?

It seems you are using an outdated version. Please follow the instructions at https://github.com/FlansMods/FlansMod/wiki/Installing-FlansMod to install the latest beta release

Solved with the last beta version. Thank you.

I'm using the last stable version :x
Do you think a beta version will be as stable?

Well.
I have to re open it.
It still crashes, but with different issues involved, still related with flan's teams.
https://gist.github.com/appollon41/52bdade499f016d9839d78b0d49fa622