diff --git a/src/main/resources/api/item.js b/src/main/resources/api/item.js
index d38ad11..c59785e 100644
--- a/src/main/resources/api/item.js
+++ b/src/main/resources/api/item.js
@@ -6,4 +6,4 @@
 /*global Java, base, module, exports, require*/
 function ItemHandlerDefault() {
 }
-exports = module.exports = Object.assign(new ItemHandlerDefault(), requireInternal('item'));;
+exports = module.exports = Object.assign(new ItemHandlerDefault(), requireInternal('item', true));;
diff --git a/src/main/resources/bios.js b/src/main/resources/bios.js
index 0d6dc17..666bfa2 100644
--- a/src/main/resources/bios.js
+++ b/src/main/resources/bios.js
@@ -43,7 +43,9 @@ var global = this;
             throw Error("Error class loader: " + classLoader.class.name + " Please contact the author MiaoWoo!");
         } else {
             log.info("Class loader compatible: " + classLoader.class.name);
-            log.info("Parent class loader: " + classLoader.parent.class.name);
+            if (classLoader.parent) {
+                log.info("Parent class loader: " + classLoader.parent.class.name);
+            }
         }
         return classLoader;
     }
diff --git a/src/main/resources/core/console.js b/src/main/resources/core/console.js
index c4a85a3..0306356 100644
--- a/src/main/resources/core/console.js
+++ b/src/main/resources/core/console.js
@@ -5,6 +5,7 @@
 (function(global) {
     var Arrays = Java.type('java.util.Arrays');
     var Level = Java.type('java.util.logging.Level');
+    var ignoreLogPrefix = ['java.', 'net.minecraft.', 'org.bukkit.', 'jdk.nashorn.'];
     global.ConsoleDefault = function ConsoleDefault(name) {
         Object.defineProperty(this, 'name', {
             get: function() {
@@ -44,12 +45,6 @@
             }.bind(this))
         };
         this.stack = function(ex) {
-            // var exType = toString.call(ex)
-            // if (exType !== "[object Error]") {
-            //     console.console('§6[WARN] Unknown Type', exType, ex)
-            //     ex.printStackTrace();
-            //     return []
-            // }
             var stack = ex.getStackTrace();
             var cache = ['§4' + ex];
             if (stack.class) {
@@ -61,8 +56,16 @@
                     fileName = fileName.indexOf('runtime') > -1 ? fileName.split('runtime')[1] : fileName;
                     cache.push('    §e->§c %s => §4%s:%s'.format(fileName, trace.methodName, trace.lineNumber))
                 } else {// %s.%s(§4%s:%s§c)
-                    var className = trace.className
-                    className = className.startsWith('jdk.nashorn.internal.scripts') ? className.substr(className.lastIndexOf('$') + 1) : className
+                    var className = trace.className;
+                    if (className.startsWith('jdk.nashorn.internal.scripts')) {
+                        className = className.substr(className.lastIndexOf('$') + 1)
+                    } else {
+                        for (var prefix in ignoreLogPrefix) {
+                            if (className.startsWith(ignoreLogPrefix[prefix])) {
+                                return;
+                            }
+                        }
+                    }
                     cache.push('    §e->§c %s.%s(§4%s:%s§c)'.format(className, trace.methodName, trace.fileName, trace.lineNumber));
                 }
             });
diff --git a/src/main/resources/core/require.js b/src/main/resources/core/require.js
index c7041cd..896ad0c 100644
--- a/src/main/resources/core/require.js
+++ b/src/main/resources/core/require.js
@@ -240,7 +240,7 @@
         file = _isFile(file) ? file : resolve(name, path);
         optional = Object.assign({ cache: true }, optional);
         if (file === undefined) {
-            throw Error("Can't found module" + name + 'in directory' + path)
+            throw Error("Can't found module " + name + " in directory " + path)
         }
         // 重定向文件名称和类型
         return getCacheModule(_canonical(file), file.name.split(".")[0], file, optional);
diff --git a/src/main/resources/internal/bukkit/server.js b/src/main/resources/internal/bukkit/server.js
index 35e7f29..07475d6 100644
--- a/src/main/resources/internal/bukkit/server.js
+++ b/src/main/resources/internal/bukkit/server.js
@@ -14,13 +14,21 @@ var nmsVersion = Bukkit.server.class.name.split('.')[3];
  * 获取NMS类
  */
 function nmsCls(name) {
-    return Java.type(['net.minecraft.server', nmsVersion, name].join('.'));
+    try {
+        return Java.type(['net.minecraft.server', nmsVersion, name].join('.'));
+    } catch (e) {
+        return base.getClass(['net.minecraft.server', nmsVersion, name].join('.'))
+    }
 };
 /**
  * 获取OBC类
  */
 function obcCls(name) {
-    return Java.type(['org.bukkit.craftbukkit', nmsVersion, name].join('.'));
+    try {
+        return Java.type(['org.bukkit.craftbukkit', nmsVersion, name].join('.'));
+    } catch (e) {
+        return base.getClass(['org.bukkit.craftbukkit', nmsVersion, name].join('.'))
+    }
 };
 /**
  * 插件管理
@@ -37,7 +45,7 @@ var plugin = {
      * @param name 插件名称
      * @returns {*}
      */
-    get: function (name) {
+    get: function(name) {
         return PluginManager.getPlugin(name);
     },
     /**
@@ -45,7 +53,7 @@ var plugin = {
      * @param name 插件名称
      * @returns {*}
      */
-    load: function (name) {
+    load: function(name) {
         var plugin = this.get(name);
         if (ext.notNull(plugin) && !plugin.isEnabled()) {
             PluginManager.enablePlugin(plugin);
@@ -69,7 +77,7 @@ var service = {
      * @param name 插件名称
      * @returns {*}
      */
-    get: function (name) {
+    get: function(name) {
         var reg = ServicesManager.getRegistration(base.getClass(name));
         return reg && reg.provider || null;
     }
@@ -131,7 +139,7 @@ function opcommand(player, command) {
 /**
  * 关闭引擎时执行的操作
  */
-function shutdown () {
+function shutdown() {
     Bukkit.scheduler.cancelTasks(plugin.self);
     Bukkit.servicesManager.unregisterAll(plugin.self);
     org.bukkit.event.HandlerList.unregisterAll(plugin.self);