Update to 1.20.4

galaxy/src/main/java/com/alttd/chat/util/GalaxyUtility.java

@@ -59,7 +59,7 @@ public class GalaxyUtility {
                 completions.addAll(pair.getY());
             }
         });
-        player.addAdditionalChatCompletions(completions);
+        player.addCustomChatCompletions(completions);
     }
 
 }