Измененно название метода

src/main/java/com/zhekasmirnov/innercore/api/mod/adaptedscript/AdaptedScriptAPI.java

@@ -166,8 +166,8 @@ public class AdaptedScriptAPI extends API {
     }
 
     @JSStaticFunction
-    public static boolean isServer(){
+    public static boolean isDedicatedServer(){
-        return false;
+        return true;
     }
 
     @APIStaticModule

src/main/resources/innercore/coreengine/core-engine.dev.js

@@ -460,8 +460,8 @@ var SaverAPI = {
     }
 };
 var GameAPI = {
-    isServer: function(){
+    isDedicatedServer: function(){
-        return isServer();
+        return isDedicatedServer();
     },
     prevent: function() {
         preventDefault();