Describe the bug
Neither FallingTree-1.16.5-2.11.3 or FallingTree-1.16.5-2.11.1 works with forge-1.16.5-36.1.16 Server.

Single player works fine with or without other forge mods loaded.

Multiplayer does not work either with just server side or server and client side loaded.

Tried on existing Forge and fresh install of both client and server

To Reproduce
Steps to reproduce the behavior:

1. Setup new client with forge-1.16.5-36.1.16-installer.jar
2. Install FallingTree-1.16.5-2.11.1 (Then tried FallingTree-1.16.5-2.11.3) Client Side
3. Confirm working on Single Player World
4. Setup new server with forge-1.16.5-36.1.16-installer.jar
5. Install FallingTree-1.16.5-2.11.1 (Then tried FallingTree-1.16.5-2.11.3) Server Side
6. Connect same client to server
7. Confirm not working on Multi Player World (Client and Server side installed)
8. Removed mod client side and retested with same results (Server side only test)

Infos:

• Minecraft version: 1.16.5
• Mod version:2.11.3
• Forge version:36.1.16

No errors reported in logs and no crash.

This ended up being a permissions issue on the server. Clean install ion another server and everything worked fine.