Minecraft: 1.15.1
Fabric: 0.7.3-build.176
Fabric API : 0.4.27-build.286
Improved Stations: 1.2.1
Crash-Report: https://pastebin.com/2dBzYeSC

The Client crashes as soon as another player is placing down a station near the first player.

Made it not crash in 1.2.3, still need to find out why it doesn't work.

The regular crafting station doesn't have the slab type property -