Issue description:

Whenever a certain player logs onto the server and loads their base, the entire server crashes.

Steps to reproduce:

1. Have my world on a SpongeForge server (I can get a link if you want)
2. Load the player's base

Version (make sure you are on the latest version before reporting):

Forge: 14.23.5.2823
Mekanism: Mekanica 1.2.0 (with patch for #5334)
SpongeForge: 1.12.2-2768-7.1.6-RC3639

If a (crash)log is relevant for this issue, link it here:

I have 2 crash logs in 1 gist, they were 5 minutes apart and triggered from the same player joining:
https://gist.github.com/tenten8401/beb1085517e8a464cd43330305ddc764
The FoamFix coremod is disabled.

Could be related to #5334 as that's the issue we were facing yesterday, before I applied that patch to the jar

Looks like a sponge issue, there's nothing abnormal about the mekanism parts of that stacktrace (its literally just trying to check if the block is loaded).

Well, the first crash log looks like it could be sponge, but the second looks more like Mekanism. Are they both sponge-related or just the first?

Sorry, didn't notice the 2nd one (it is preferred that separate issues are posted on separate Github issues)

The 2nd one isn't something that should normally even be possible. The only way I can even think it might happen is if Sponge is actually loading the chunk when all we're doing is checking if it is loaded.

Are you able to reproduce it without Sponge?