Not every time the server loads it crashes with this stacktrace-

https://gist.github.com/ProsperCraft/8a1ceee04511a032c7a83002d5b911df

Crash log with only create-
https://gist.github.com/ProsperCraft/8abad9be1935395e38df903e00071c6c

Crash log with minecraft2discord in it as well-
https://gist.github.com/ProsperCraft/e9908b705d7f8ec9d79d1b7bb57f804e

create-mc1.14.4_v0.1.1
forge-1.14.4-28.1.47

Modpack - https://www.curseforge.com/minecraft/modpacks/the-adventures-of-halk/

debug.log
latest.log

Thanks for reporting, this looks similar to #22 - something I couldn't reproduce on my machine.
I'm currently waiting for feedback from the author of the original issue.

If you would like to get involved - I have a potential patch sitting here.
In order to further investigate this peculiar bug, it would be extremely helpful to know whether this fixes it or shows a more detailed stacktrace. Otherwise, no worries- I will hope to get this fixed soon enough.

It would be fantastic to know whether this still happens with the new version that went live yesterday. This issue is hard to track down and I need all the info I can get.

Looks to be fixed in later forge versions. See #22
Feel free to re-open if this issue persistet for you. Cheers!