Crash ModelBipel in server

Hello,

I have just started to learn to modding and I find myself blocked when passing my mods that server.  

Help me plz

My crash report :

---- Minecraft Crash Report ----
// There are four lights!

Time: 4/17/22 2:01 AM
Description: Exception in server tick loop

java.lang.NoClassDefFoundError: net/minecraft/client/model/ModelBiped
      at com.drastic.tuto.init.ItemInit.<clinit>(ItemInit.java:55)
      at com.drastic.tuto.objects.blocks.BlockBasic.<init>(BlockBasic.java:24)
      at com.drastic.tuto.init.BlockInit.<clinit>(BlockInit.java:15)
      at com.drastic.tuto.util.handlers.RegistryHandler.onBlockRegister(RegistryHandler.java:26)
      at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_144_RegistryHandler_onBlockRegister_Register.invoke(.dynamic)
      at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
      at net.minecraftforge.fml.common.eventhandler.EventBus$1.invoke(EventBus.java:144)
      at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:182)
      at net.minecraftforge.registries.GameData.fireRegistryEvents(GameData.java:845)
      at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:630)
      at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:99)
      at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:333)
      at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:125)
      at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486)
      at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.model.ModelBiped
      at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
      ... 15 more
Caused by: java.lang.NullPointerException
      at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
      ... 17 more


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
      Minecraft Version: 1.12.2
      Operating System: Linux (amd64) version 4.9.0-17-amd64
      Java Version: 1.8.0_292, AdoptOpenJDK
      Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), AdoptOpenJDK
      Memory: 291300648 bytes (277 MB) / 519110656 bytes (495 MB) up to 6227755008 bytes (5939 MB)
      JVM Flags: 3 total; -XX:+UseSerialGC -Xmx6144M -Xms512M
      IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
      FML: MCP 9.42 Powered by Forge 14.23.5.2859 6 mods loaded, 6 mods active
      States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

      | State | ID         | Version      | Source                                  | Signature                                |
      |:----- |:---------- |:------------ |:--------------------------------------- |:---------------------------------------- |
      | LCH   | minecraft  | 1.12.2       | minecraft.jar                           | None                                     |
      | LCH   | mcp        | 9.42         | minecraft.jar                           | None                                     |
      | LCH   | FML        | 8.0.99.99    | forge-1.12.2-14.23.5.2859.jar           | e3c3d50c7c986df74c645c0ac54639741c90a557 |
      | LCH   | forge      | 14.23.5.2859 | forge-1.12.2-14.23.5.2859.jar           | e3c3d50c7c986df74c645c0ac54639741c90a557 |
      | LCH   | ebwizardry | 4.3.6        | ElectroblobsWizardry-4.3.6-MC1.12.2.jar | None                                     |
      | LCH   | tuto       | 1.0          | modid-1.0.jar                           | None                                     |

      Loaded coremods (and transformers):
      Profiler Position: N/A (disabled)
      Is Modded: Definitely; Server brand changed to 'fml,forge'
      Type: Dedicated Server (map_server.txt)