https://pastebin.com/ELtDvSw0

Issue Description:

I've had a handful of crashes in a mod pack and after the last crash I've traced it back to the Ender tether used.

What happens:

When playing the crashes seemingly appear out of nowhere. Until you look at the crash report. As it turns out the 4 ender tethers I have set up around an EnderIO mob spawner for endermen is crashing the game. This could be caused by bad interaction between ender tethers and the inhibitor obelisk from EIO.

What you expected to happen:

When this happens I have to manually go into MC Edit and delete the enderman in order to get the game to load up w/o crashing again. Once the chunk loads with "ticking" endermen the game flips out.

Steps to reproduce:

1. Place down ender tethers in a chunk loaded area.
2. Wait for endermen to spawn
3. Cry
   ...

Which version are you using?

G'day I'm having a similar issue with 1.18.finalrc1. I've put the crash log in a gist.

I'm currently debugging it on my local machine and i'll report back to see what's going wrong though I get the feeling that entity.getCollisionBoundingBox() is null

So I have confirmed that the problem is that the entity has a null bounding box. I will put up a PR momentarily to fix this

We are getting multiple crashes whenever an enderman is nearby. It's becoming very stressful, as the server doesn't usually last more than 3 minutes before crashing again.

This issue is present for me on version 1.1.8.finalrc1 for MC 1.10.2

This has been fixed on 1.10.2 thanks to leesdolphin. You can download finalrc2 here. A fix to 1.11.2 will be out shortly.