Bug description

[Worker-Main-8/ERROR] [minecraft/TagLoader]: Couldn't load tag gravestone:grave_replaceable as it is missing following references:
minecraft:grass (from mod/gravestone)

Minecraft version

1.21.1

Mod version

1.0.21

Mod loader and version

Neoforge 21.1.23

Steps to reproduce

while having on the server and launching the server with this mods this error occurs

Expected behavior

not having an error in the log ?

Log files

https://gist.github.com/ndv01/2ff4a285bba9e76e40a14bb3e9d70a76

Screenshots

No response

Does this happen without any other mods installed?

Yes