Fixed random crashes and load ViaVersion async

src/main/java/de/florianmichael/viafabricplus/ViaFabricPlus.java

@@ -30,6 +30,7 @@
 import org.apache.logging.log4j.Logger;
 
 import java.io.File;
+import java.util.concurrent.CompletableFuture;
 
 /*
  * TODO | General
@@ -66,17 +67,22 @@ public class ViaFabricPlus {
     private SettingsManager settingsManager;
     private SaveManager saveManager;
 
+    private CompletableFuture<Void> loadingFuture;
+
     @SuppressWarnings("ResultOfMethodCallIgnored")
     public void bootstrap() {
         directory.mkdir();
         ClassLoaderPriorityUtil.loadOverridingJars(directory); // Load overriding jars first so other code can access the new classes
 
         ClientsideFixes.init(); // Init clientside related fixes
-        ProtocolHack.init(directory); // Init ViaVersion protocol translator platform
+        loadingFuture = ProtocolHack.init(directory); // Init ViaVersion protocol translator platform
 
         settingsManager = new SettingsManager();
         saveManager = new SaveManager(settingsManager);
-        PostGameLoadCallback.EVENT.register(saveManager::init); // Has to wait for Minecraft because of the translation system usages
+        PostGameLoadCallback.EVENT.register(() -> {
+            saveManager.init();
+            loadingFuture.join();
+        }); // Has to wait for Minecraft because of the translation system usages
     }
 
     public static ViaFabricPlus global() {

src/main/java/de/florianmichael/viafabricplus/fixes/diff/ItemRegistryDiff.java

@@ -1369,5 +1369,4 @@ public static boolean keepItem(final Item item) {
         return !ITEM_DIFF.containsKey(item) || ITEM_DIFF.get(item).contains(ProtocolHack.getTargetVersion() /*ProtocolHack.getTargetVersion().isNewerThanOrEqualTo(ITEM_DIFF.get(item)*/);
     }
 
-
 }