fix: dedicated server

common/src/main/kotlin/quaedam/config/SimpleQuaedamConfigPush.kt

@@ -1,7 +1,9 @@
 package quaedam.config
 
 import dev.architectury.networking.NetworkManager
+import dev.architectury.platform.Platform
 import io.netty.buffer.Unpooled
+import net.fabricmc.api.EnvType
 import net.minecraft.nbt.CompoundTag
 import net.minecraft.network.FriendlyByteBuf
 import net.minecraft.server.level.ServerPlayer
@@ -12,7 +14,9 @@ object SimpleQuaedamConfigPush {
     val id = Quaedam.resource("simple_config_push")
 
     init {
-        NetworkManager.registerReceiver(NetworkManager.Side.S2C, id, ::handle)
+        if (Platform.getEnv() == EnvType.CLIENT) {
+            NetworkManager.registerReceiver(NetworkManager.Side.S2C, id, ::handle)
+        }
     }
 
     private fun handle(buf: FriendlyByteBuf, ctx: NetworkManager.PacketContext) {