diff --git a/usr/lib/python3/dist-packages/webengine/gtk3/__init__.py b/usr/lib/python3/dist-packages/webengine/gtk3/__init__.py
index e75f3e9..6371c5d 100644
--- a/usr/lib/python3/dist-packages/webengine/gtk3/__init__.py
+++ b/usr/lib/python3/dist-packages/webengine/gtk3/__init__.py
@@ -2,10 +2,13 @@
 # @author yutent<yutent.io@gmail.com>
 # @date 2023/08/31 11:55:25
 
-from webengine.gtk3._webengine import WebEngine
-from webengine.gtk3._settings import create_setting
-from webengine.gtk3._hotreload import create_hmr_server
+# from webengine.gtk3._webengine import WebEngine
+# from webengine.gtk3._settings import create_setting
+# from webengine.gtk3._hotreload import create_hmr_server
 
+from ._webengine import WebEngine
+from ._settings import create_setting
+from ._hotreload import create_hmr_server
 
 build = (0, 3, 0)
 version = '.'.join(map(str, build))
diff --git a/usr/lib/python3/dist-packages/webengine/gtk3/_webengine.py b/usr/lib/python3/dist-packages/webengine/gtk3/_webengine.py
index 2f85a1a..a09da4c 100644
--- a/usr/lib/python3/dist-packages/webengine/gtk3/_webengine.py
+++ b/usr/lib/python3/dist-packages/webengine/gtk3/_webengine.py
@@ -112,8 +112,10 @@ class WebEngine(WebKit2.WebView):
     im.notify_cursor_area(p.x - x, p.y - y, 0, 0) # 修正输入法跟随
 
 
-  def call_js(self, method, data = None):
-    scripts = 'native.$emit("' + method + '",' + json.dumps(data) + ')'
+  def call_js(self, method, data = None, err = None):
+    if err is not None:
+      err = str(err)
+    scripts = 'native.$emit("' + method + '", ' + json.dumps(err) + ', ' + json.dumps(data) + ')'
     self.evaluate_javascript(scripts, -1)
 
   
@@ -125,6 +127,7 @@ class WebEngine(WebKit2.WebView):
     callback = data.get('callback')
     params = data.get('data')
     output = None
+    _error = None
 
 
     match event:
@@ -134,15 +137,25 @@ class WebEngine(WebKit2.WebView):
       case 'fs':
         filepath = params.get('filepath')
 
-        if params['action'] == 'read':
-          with open(filepath, params.get('mode')) as file:
-            output = file.read()
-            if params.get('mode').find('b') > -1:
-              output = list(output)
+        if params['action'] == 'access':
+          try:
+            with open(filepath, params.get('mode')) as file:
+              output = True
+          except Exception as err:
+            output = False
 
-        if params['action'] == 'write':
-        
-            # 调整以支持二进制数据写入
+        elif params['action'] == 'read':
+          try:
+            with open(filepath, params.get('mode')) as file:
+              output = file.read()
+              if params.get('mode').find('b') > -1:
+                output = list(output)
+          except Exception as err:
+            _error = err
+
+        elif params['action'] == 'write':
+          # 调整以支持二进制数据写入
+          try:
             with open(filepath, params.get('mode')) as file:
               buff = params['content']
 
@@ -150,11 +163,13 @@ class WebEngine(WebKit2.WebView):
                 buff = bytes(buff)
 
               output = file.write(buff)
+          except Exception as err:
+            _error = err
 
-        if params['action'] == 'exists':
+        elif params['action'] == 'exists':
           output = os.path.exists(filepath)
 
-        if params['action'] == 'list':
+        elif params['action'] == 'list':
           with os.scandir(filepath) as entries:
             output = [{
               "name": it.name,
@@ -165,24 +180,24 @@ class WebEngine(WebKit2.WebView):
               "mtime": int(it.stat().st_mtime),
             } for it in entries]
 
-        if params['action'] == 'remove':
+        elif params['action'] == 'remove':
           if os.path.isfile(filepath):
             output = os.remove(filepath)
           elif os.path.isdir(filepath):
             output = os.removedirs(filename)
 
-        if params['action'] == 'rename':
+        elif params['action'] == 'rename':
           if os.path.exists(filepath):
             output = shutil.move(filepath, params['target'])
 
-        if params['action'] == 'copy':
+        elif params['action'] == 'copy':
           if os.path.exists(filepath):
             output = shutil.copy2(filepath, params['target'])
 
-        if params['action'] == 'isfile':
+        elif params['action'] == 'isfile':
           output = os.path.isfile(filepath)
    
-        if params['action'] == 'isdir':
+        elif params['action'] == 'isdir':
           output = os.path.isdir(filepath)
 
 
@@ -331,5 +346,5 @@ class WebEngine(WebKit2.WebView):
 
     # 有回调则返回结果
     if callback:
-      self.call_js(callback, output)
+      self.call_js(callback, output, _error)
       
\ No newline at end of file
diff --git a/usr/lib/python3/dist-packages/webengine/gtk3/inject.js b/usr/lib/python3/dist-packages/webengine/gtk3/inject.js
index 98d55a4..2654c83 100644
--- a/usr/lib/python3/dist-packages/webengine/gtk3/inject.js
+++ b/usr/lib/python3/dist-packages/webengine/gtk3/inject.js
@@ -64,7 +64,13 @@ function handler(event, data = {}, once = true) {
 
   if (typeof once === 'boolean') {
     callback = rand()
-    native[once ? '$once' : '$on'](callback, _.resolve)
+    native[once ? '$once' : '$on'](callback, (err, res) => {
+      if (err) {
+        _.reject(err)
+      } else {
+        _.resolve(res)
+      }
+    })
   } else {
     _.resolve(true)
   }
@@ -187,6 +193,10 @@ Object.assign(native, {
     return handler('quit', {}, null)
   },
   fs: {
+    access(filepath, mode = 'r') {
+      return handler('fs', { action: 'access', mode, filepath })
+    },
+
     read(filepath, mode = 'r') {
       return handler('fs', { action: 'read', mode, filepath }).then(r =>
         mode.includes('b') ? new Uint8Array(r) : r