Versions:
create-mc1.15.2_v0.2.4e.jar
Minecraft: [1.15.2] (required)
Forge: [31.2.47] (required)
Modpacks : Craft to Exile [Dissonance]
Version : CrafttoExile-Dissonance-2.8.0b-SERVER
https://www.curseforge.com/minecraft/modpacks/crafttoexiledissonance/files

Describe the bug
Planting trees cannot be used in multiplayer games, but there is no problem in single player games.

Screenshots
multiplayer:

singleplayer:

Expected behavior
Is there a solution?

This issue has been marked as stale because it has been inactive for 3 weeks. It will be closed if it remains inactive for another 3 weeks.

This issue has been closed since it has been inactive for 3 weeks since it was marked as stale.

Hello there!
These tips might help!

First, make sure there is a one block space between where the deployer is and where it wants to place, like this:

Another issue could be that you have minecolonies installed, you might have to disable colony protection.
If you are not using minecolonies, check to see if there are any claim mods, if there are any claim mods, you'll need to allow fakePlayers inorder for the deployer to do stuff in your claim.

I just chesked your modpack, you have minecolonies, you might need to whitelist Deployer in your colony

I do not know how to whitelist.

Ha, claims, that's what got me :)
Fortunately in the modpack we play 'Deployer' already shows up as an option for allies :)

Thx. Whitelisting helped me on Direwolf20 1.16 Pack