Fix auto updater attempting to update to "null"

forge/src/main/java/com/seibel/distanthorizons/forge/mixins/client/MixinMinecraft.java

@@ -25,6 +25,11 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 @Mixin(Minecraft.class)
 public class MixinMinecraft
 {
+	@Unique
+	private static final Logger LOGGER = DhLoggerBuilder.getLogger(MixinMinecraft.class.getSimpleName());
+	
+	
+	
 	#if MC_VER < MC_1_20_2
 	#if MC_VER == MC_1_20_1
 	@Redirect(
@@ -68,6 +73,7 @@ public class MixinMinecraft
 	)
 	private void buildInitialScreens(Runnable runnable)
 	{
+		// TODO merge logic for forge, neo, and fabric
 		if (
 				Config.Client.Advanced.AutoUpdater.enableAutoUpdater.get() // Don't do anything if the user doesn't want it
 				&& SelfUpdater.onStart()
@@ -86,11 +92,29 @@ public class MixinMinecraft
 					versionId = GitlabGetter.INSTANCE.projectPipelines.get(0).get("sha");
 				}
 				
-				Minecraft.getInstance().setScreen(new UpdateModScreen(
-						// TODO: Change to runnable, instead of tittle screen
-						new TitleScreen(false), // We don't want to use the vanilla title screen as it would fade the buttons
-						versionId
-				));
+				if (versionId != null)
+				{
+					try
+					{
+						
+						Minecraft.getInstance().setScreen(new UpdateModScreen(
+								// TODO: Change to runnable, instead of tittle screen
+								new TitleScreen(false), // We don't want to use the vanilla title screen as it would fade the buttons
+								versionId
+						));
+					}
+					catch (IllegalArgumentException e)
+					{
+						// info instead of error since this can be ignored and probably just means
+						// there isn't a new DH version available
+						LOGGER.info("Unable to show DH update screen, reason: ["+e.getMessage()+"].");
+					}
+				}
+				else
+				{
+					LOGGER.info("Unable to find new DH update for the ["+updateBranch+"] branch. Assuming DH is up to date...");
+				}
+			};
 			};
 		}