https://pastebin.com/LpwKSYGM

Has this happened multiple times?

No

How did you get it to happen because I cannot seem to be able to reproduce it?

I dont know to be honest, it seems happen random. None of my players, did anything related to your mod.

And if yes, has it launched since?

So the server just crashed one time?

Finally, is there a mod in your modpack, that adds any weird enchantment?

Also, I can tell you that I have identified the issue. However it doesn't seem to be caused by Llamarama, rather by an interaction between Llamarama and some other mod. That's why I've asked the questions above.

So the server just crashed one time?

Yes.

And if yes, has it launched since?

Yes.

Finally, is there a mod in your modpack, that adds any weird enchantment?

A lot. Some examples are Gobber, or Fabric Enchantments.

https://www.curseforge.com/minecraft/modpacks/deathdusk

And if yes, has it launched since?

Yes.

Okay so this means the crash wasn't a hard one. However, it also means it's gonna be hard to find the mod that causes the problem. I am gonna go all out and say this: Llamarama is definitely not the mod causing the issue. I will implement a hard-coded fix however, just in case there is another mod that behaves this way. Thank you for your report.

79b1907 should contain the fix for this. It will be released along with other bugfixes in 1.5.2. If you could wait until then, we would really appreciate it.