Describe the bug, provide any errors
I have a 1.12.2 Paper server and a Spawn with a lot of Holograms. Everyone in Spawn with a 1.7.10 client crashes sometimes when running /hd reload or updating a lot of holograms at once with another plugin. This is the client error: https://pastebin.com/raw/PKVarTu8

Stuff I tried:

• Removing FAWE
• Using Holographic Displays 2.2.6, 2.3.2, and 2.4.5 (latest)
• Using all the latest ViaVersion builds from https://ci.viaversion.com
• Tried connecting to the lobby directly bypassing our proxy software Travertine
• Tried connecting with a vanilla client instead of forge

None of the above worked

How can we reproduce it?
Not entirely sure how to reproduce it. /hd reload causes it sometimes. We also have a Holographic Displays parkour leaderboard which consistently crashes everyone when it is reloaded. Here is the code that reloads that Hologram leaderboard if that is useful: https://pastebin.com/raw/ekgbkLJX

The problem is only caused when the server an client are different versions. 1.7.10 server/client and 1.12.2 server client work fine.

ViaVersion Dump:

• https://dump.viaversion.com/768aa4cad593d8a84dfb6318dc0ae4b154d88ea3a53df9471116f06f4757cee5

Checklist

• I have included a ViaVersion dump
• If applicable, I have included a paste (not a screenshot) of the error
• I have tried a build from https://ci.viaversion.com/ and the issue still persists

I am also having this problem

This PR claimed to fix the problem and has more information #81 not sure why the author closed it.

Hey, I'm so sorry for the extremely late response, I don't use this github account anymore. I believe I closed the PR because the issue seemed to fix itself without my change and I was no longer confident that my commit would solve the issue I was having initially. It's possible it does actually fix the issue, but without it the chances of it happening are small thus making it hard to reproduce.

This PR claimed to fix the problem and has more information #81 not sure why the author closed it.