Shearing Block on Environmental Yak causes crash

[DrUltraLux]

Minecraft Version: 1.16.5

Forge Version: 36.2.34

Mod Version: Cyclic 1.5.15, environmental 1.1.1

Single Player or Server: Server

Describe problem (what you were doing; what happened; what should have happened): I placed a Shearing Block into my yak pen, then shearing sound fired, and then the server crashed.

Log file link: Will add when I can get it from the server admin