MODPACK CRASH: The game crashed whilst accessing legacyrandomsource from multiple threads

[Cloudyweather]

Hey folks, I am playing a custom modpack I have created and experience frequent crashed seemingly without any reason. I don't really know much about the coding and crash reports, so I thought maybe you guys can help me out?

(There are a lot of mods in my pack :/)

Crash Report:

https://pastebin.ai/g3yoq3fnzh

[TileEntity]

Same issue without valkyrienskies?

[Cloudyweather]

Haven't tested it yet, will do, however, if necessary. Would be a shame, tho, as I would really love to use the Eureka Ship mod
Crashes don't happen too often but like twice in 3 hours so far, so still annoying