Minecraft Version: 1.16.5

Forge Version: 36.2.23

Mod Version: 1.5.1

Single Player or Server: Server

Describe problem (what you were doing; what happened; what should have happened): Server completely crashes most of us was just hanging around at spawn I don't know if any interactions with a SSN happened
Edit: Crash seems to have been caused from a hopper going into a network collection interface

Log file link: https://pastebin.com/3tqRkr91

Video/images/gifs (direct upload or link):

Found a fix?

@Lothrazar because you are curious how big the networks are (#427)
Had the same issue today for 1.16.5-1.5.1 and forge 36.2.23:

According to the user he used this one. He just crafted something.

But there is also a 2nd, which isn't connected to the first. He is sure that he didn't use it in a while.

Edit:
Is it possible/valid that IConnectableLink storage can be this in 1..n recursion ?