While troubleshooting issue #109, I encountered a server crash caused by the coupler block.
Steps to reproduce:

1. Place a J shaped length of rail (a consecutive straight and curved track section)
2. place the coupler block on the stright track.
3. change the distance of the coupler locations until the moving one hits the curve
   -> crash

Logs from my server are here: https://mclo.gs/jx0gUKl
Logs from my single player test world are here: crash-2023-04-26_22.57.01-server.txt

Versions
Minecraft 1.19.2
Fabric 0.14.19
Create 0.5.0.i-1003
Steam and Rails 1.2.4