fix loading on server

Author: iczero

src/main/java/net/hellomouse/authmemes/AuthMemes.java

@@ -7,6 +7,7 @@
 import net.neoforged.fml.common.Mod;
 import net.neoforged.fml.config.ModConfig;
 import net.neoforged.fml.event.lifecycle.FMLCommonSetupEvent;
+import net.neoforged.fml.loading.FMLEnvironment;
 import net.neoforged.neoforge.client.gui.ConfigurationScreen;
 import net.neoforged.neoforge.client.gui.IConfigScreenFactory;
 import net.neoforged.neoforge.common.NeoForge;
@@ -34,7 +35,10 @@ public AuthMemes(IEventBus modEventBus, ModContainer modContainer) {
 
         // Register our mod's ModConfigSpec so that FML can create and load the config file for us
         modContainer.registerConfig(ModConfig.Type.COMMON, Config.SPEC);
-        modContainer.registerExtensionPoint(IConfigScreenFactory.class, ConfigurationScreen::new);
+        if (FMLEnvironment.dist.isClient()) {
+            // enable forge config screen if on client
+            modContainer.registerExtensionPoint(IConfigScreenFactory.class, ConfigurationScreen::new);
+        }
     }
 
     private void commonSetup(final FMLCommonSetupEvent event) {

src/main/java/net/hellomouse/authmemes/mixin/GameProfileCacheMixin.java

@@ -1,6 +1,5 @@
 package net.hellomouse.authmemes.mixin;
 
-import com.llamalad7.mixinextras.sugar.Cancellable;
 import com.mojang.authlib.GameProfile;
 import com.mojang.authlib.GameProfileRepository;
 import net.hellomouse.authmemes.Config;

src/main/java/net/hellomouse/authmemes/mixin/ServerLoginPacketListenerImplMixin.java

@@ -2,7 +2,6 @@
 
 import com.mojang.authlib.GameProfile;
 import com.mojang.logging.LogUtils;
-import net.hellomouse.authmemes.AuthMemes;
 import net.hellomouse.authmemes.Config;
 import net.minecraft.network.Connection;
 import net.minecraft.network.chat.Component;
@@ -20,8 +19,7 @@
 
 @Mixin(ServerLoginPacketListenerImpl.class)
 public class ServerLoginPacketListenerImplMixin {
-    @Unique
-    private static final Logger LOGGER = LogUtils.getLogger();
+    @Unique private static final Logger LOGGER = LogUtils.getLogger();
 
     @Shadow String requestedUsername;
     @Shadow @Final Connection connection;
@@ -55,11 +53,10 @@ public void handleHelloAuth(ServerboundHelloPacket pPacket, CallbackInfo ci) {
             }
         }
 
+        ci.cancel();
         if (!allowed) {
-            ci.cancel();
             this.disconnect(Component.literal("IP address mismatch"));
         } else {
-            ci.cancel();
             this.startClientVerification(UUIDUtil.createOfflineProfile(offlineEntry.username()));
         }
     }