'/viaversion dump' Output

https://dump.viaversion.com/c0dbbfa7d9d81943ffa0379a34ac115f1eebc490dfe78442c781857b13a372da

Console Error

https://paste.gg/p/anonymous/d2024c3fef604463bacc4c273472f375

Bug Description

When joining on 1.8.9 you get kicked multiple times before being able to join

Steps to Reproduce

1. Login with 1.8.9
2. Getting kicked with error in console

Expected Behavior

Not being kicked

Additional Server Info

Using Waterfall

Checklist

• Via plugins are only running on EITHER the backend servers (e.g. Paper) OR the proxy (e.g. BungeeCord), not on both.
• 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.