To Reproduce
Steps to reproduce the crash:

1. Launch rocket into space.

Versions (please complete the following information)

• Forge: 14.23.5.2854
• Flan's Mod: 5.6.0 Beta 10all
• Galacticraft: 4.0.2.280

Crash Log

• Crash Report: https://gist.github.com/spruill7716/1e1300254b1bbdf6ab08b76f990404f4
• Server Console Spams: https://gist.github.com/spruill7716/6b32cff2ea7bccae9744cfce2d4b205f

Additional context
Since installing the most recent Flan's build, any attempt at going to space with Galacticraft ends up timing out the server. Whenever a player launches a rocket, the following: https://gist.github.com/spruill7716/6b32cff2ea7bccae9744cfce2d4b205f is spammed in the console and overloads the server. I saw that there were mentions of Flan's mod in '[flansmod]: Tried to add mp5k to player class gignDualWield1 but the item did not exist' . Some kind of conflict perhaps? I've submitted another report to Galacticraft for safe measure.

I think this has more chance of being a Galacticraft issue
https://gist.github.com/spruill7716/1e1300254b1bbdf6ab08b76f990404f4#file-gistfile1-txt-L43
https://gist.github.com/spruill7716/6b32cff2ea7bccae9744cfce2d4b205f#file-gistfile1-txt-L1202