Describe the bug
When putting on a costume that give effects while on a server, it will instantly kick you until the player's inventory is cleared. This is happening because the server is trying to render shaders, which is something that only exists on the client side.

To Reproduce
Steps to reproduce the behavior:

1. Equip a costume that gives shader effects
2. It will kick you

Logs
2019-11-26-1.log

Thanks for the report!

This bug will be fixed for v2.0.1.