Hello, I'm very optimistic about your mod, but my server will crash if I use it.

How to reproduce the problem:
Placing or mining any item in this module in the server will cause a crash.

Crash log:
https://paste.loliidc.cn/?face9b758ff3ab03#GYEykeVqejmmFVe7TY4yG8kWimkSRmsyWXvegSosRJJc

Additional information:
Minecraft version: 1.16.5
Forge version:
Server: forge-1.16.5-36.2.31
Client: forge-1.16.5-36.2.29
Mod version: framedblocks: 2.14.2
LoliServer version: 1.16.5-1e51f20

At present, the server test only found this problem.
I hope this problem will be solved.
thank!

Mod can work normally in single player games, but use Carry on mod Lift and then put it down. The nature of the box remains unchanged, but the material will be lost and displayed as the original frame structure.

：d- But I don't think it matters.

Please put your crash report on https://gist.github.com, I can't access the link you posted.

This is an issue with using an Forge+Bukkit Hybrid
Try to use an Forge server by itself, and see if you can replicate the issue.
(Can't speak for XFactHD, but I could access the log, and I know mods are not quite made for Forge+Bukkit Hybrids)

As Finn mentioned, this is an issue with Bukkit breaking contract with the normal implementation of the Minecraft server. This is something that I can't support or fix without risking to break things for people using a normal Minecraft server installation with Forge.

As for the issue with Carry On, please open a separate issue for that, including the versions of both mods. At a glance this seems to be an issue with the way Carry On places carried blocks which erases part for the data.