Retélécharge le mod en essayant un build plus ancien/nouveau.
Non,désolé,en-fait,c'est bon,il veut bien.
Du coup j'ai lancé mon serveur avec mes 41 mods,tout marche très bien,mais,toujours le même problème...
Je te montre le log que j'ai eu quand j'ai placé un bloc et qu'il a disparu après avoir arrêté le serveur voila ce que cela donne:
[11:21:41] [Server thread/INFO]: Starting minecraft server version 1.12.2
[11:21:41] [Server thread/INFO]: Loading properties
[11:21:41] [Server thread/INFO]: Default game type: SURVIVAL
[11:21:42] [Server thread/INFO]: Generating keypair
[11:21:42] [Server thread/INFO]: Starting Minecraft server on *:25565
[11:21:42] [Server thread/INFO]: Using default channel type
[11:21:53] [Server thread/INFO]: Preparing level "world"
[11:21:54] [Server thread/INFO]: Loaded 488 advancements
[11:21:54] [Server thread/INFO]: Preparing start region for level 0
[11:21:55] [Server thread/INFO]: Preparing spawn area: 22%
[11:21:56] [Server thread/INFO]: Done (2,764s)! For help, type "help" or "?"
[11:25:04] [User Authenticator #1/INFO]: UUID of player parzivalxx is 0c8bf821-e142-4c5c-bb7a-6a9c39afcd7f
[11:25:04] [Server thread/INFO]: parzivalxx[/192.168.1.26:58898] logged in with entity id 404 at (460.0716085034824, 66.0, 438.0520656221029)
[11:25:04] [Server thread/INFO]: parzivalxx joined the game
[11:25:55] [Server thread/INFO]: parzivalxx fell out of the world
[11:25:55] [Server thread/INFO]: [parzivalxx: Killed parzivalxx]
[11:26:13] [Server thread/INFO]: parzivalxx lost connection: Disconnected
[11:26:13] [Server thread/INFO]: parzivalxx left the game
[11:26:20] [Server thread/INFO]: Stopping the server
[11:26:20] [Server thread/INFO]: Stopping server
[11:26:20] [Server thread/INFO]: Saving players
[11:26:20] [Server thread/INFO]: Saving worlds
[11:26:20] [Server thread/INFO]: Saving chunks for level 'world'/overworld
[11:26:20] [Server thread/INFO]: Saving chunks for level 'world'/the_nether
[11:26:21] [Server thread/INFO]: Saving chunks for level 'world'/the_end