三步解决python PermissionError: [WinError 5]拒绝访问的情况

[W 11:03:21.011 NotebookApp] Error loading server extension jupyterlab
 Traceback (most recent call last):
 File "E:\Anaconda3\lib\site-packages\jupyterlab\commands.py", line 321, in
 __init__
 self._run(['node', 'node-version-check.js'], cwd=HERE, quiet=True)
 File "E:\Anaconda3\lib\site-packages\jupyterlab\commands.py", line 1165, i
n _run
 proc = Process(cmd, **kwargs)
 File "E:\Anaconda3\lib\site-packages\jupyterlab\process.py", line 73, in _
_init__
 self.proc = self._create_process(cwd=cwd, env=env)
 File "E:\Anaconda3\lib\site-packages\jupyterlab\process.py", line 131, in
_create_process
 cmd[0] = which(cmd[0], kwargs.get('env'))
 File "E:\Anaconda3\lib\site-packages\jupyterlab\jlpmapp.py", line 59, in w
hich
 raise ValueError(msg)
 ValueError: Please install nodejs 5+ and npm before continuing installation.
 nodejs may be installed using conda or directly from the nodejs website.
 
 During handling of the above exception, another exception occurred:
 
 Traceback (most recent call last):
 File "E:\Anaconda3\lib\site-packages\notebook\notebookapp.py", line 1454,
in init_server_extensions
 func(self)
 File "E:\Anaconda3\lib\site-packages\jupyterlab\extension.py", line 111, i
n load_jupyter_server_extension
 info = get_app_info(app_dir)
 File "E:\Anaconda3\lib\site-packages\jupyterlab\commands.py", line 244, in
 get_app_info
 handler = _AppHandler(app_dir, logger)
 File "E:\Anaconda3\lib\site-packages\jupyterlab\commands.py", line 324, in
 __init__
 raise ValueError(msg)
 ValueError: Please install nodejs 5+ and npm before continuing installation.
 nodejs may be installed using conda or directly from the nodejs website.
[I 11:03:21.336 NotebookApp] Serving notebooks from local directory: C:\Users\Ad
ministrator\Desktop\shuju
[I 11:03:21.338 NotebookApp] 0 active kernels
[I 11:03:21.339 NotebookApp] The Jupyter Notebook is running at:
[I 11:03:21.340 NotebookApp] http://localhost:8888/?token=14172d7abed02b6a0b816a
51fa29f6b44929d2f96b8a1b7f
[I 11:03:21.342 NotebookApp] Use Control-C to stop this server and shut down all
 kernels (twice to skip confirmation).
[C 11:03:21.350 NotebookApp]
 
 Copy/paste this URL into your browser when you connect for the first time,
 to login with a token:
 http://localhost:8888/?token=14172d7abed02b6a0b816a51fa29f6b44929d2f96b8
a1b7f
[I 11:03:21.581 NotebookApp] Accepting one-time-token-authenticated connection f
rom ::1
[I 11:15:21.364 NotebookApp] Interrupted...
[I 11:15:21.366 NotebookApp] Shutting down 0 kernels