Schematicannon printing tracks crashes server in certain situations

[Xexmre]

Describe the Bug

The schematic cannon printing overlapping tracks causes the server to crash. And every time the bugged chunk is loaded, the server crashes. This highly destructive bug can unintentionally occur on the server, destroying the save. It can only be fixed by deleting the bugged chunk.

Reproduction Steps

1.Get a schematic of a sloped train track.

2.Print the first track on the ground and place the second schematic to connect with the first track, overlapping their endpoints, but do not print the second one.


3.Put the second schematic in the canon and turn off "protect block entities".
4.Start printing and then the servers crashes.

Expected Result

Prevent the rail from printing or just drop the rail as an item.

Screenshots and Videos

2024-06-24.18-05-24.mp4

Crash Report or Log

This bug is very easy to reproduce, so for convenience, error logs are not uploaded.

Operating System

Windows 10

Mod Version

0.5.1f

Minecraft Version

1.20.1

Forge Version

47.3.1

Other Mods

None

Additional Context

A player from our server said that he crashed the server by printing a strait rail without a slope, but I failed to reproduce it.