Betweenlands version:

TheBetweenlands-3.4.6-universal

Forge version:

spongeforge-1.12.2-2768-7.1.5

Singleplayer or Multiplayer:

Multiplayer Sponge

Installed mods:

Link to full crash log

no crash log

Description of the problem

How to reproduce:

When you fight with the boss on the top of Wight Fortress, the green bullets it fires must be snagged by the player with a sword and shot back at the boss, but there is no green bullets at all, and you cannot hit the boss.

Pictures:

Were you in survival mode?
Could also be caused by Sponge, please try it without Sponge if possible.

Yes, I and my friends were in survival mode.
I wanted to try without Sponge, But I couldn't find boss quickly. I'll try to find him and report the results.

I tried with the same mods but without the sponge. Everything works. Is it possible to fix a bug for a sponge?

Alright, thanks for testing it out. Sponge does change quite a few things about mob spawning, but I don't really know how it works exactly and why it wouldn't working this particular case here. Would probably be best to report it to Sponge.