(root) C:\Users\Arun>jupyter notebook list

Currently running servers:
http://localhost:8890/?token=d70754b078073066f1c8003b303db1bf02a2a6e0eb2a4081 :: c:\Users\Arun\Github\Notebook\python-machine-learning-book-master
http://localhost:8888/?token=969aa0d7636e12fb85b8bca99671887456c71c682b048352 :: c:\Users\Arun\Github\Sublime
http://localhost:8889/?token=ed5ad57d94e7ff7ad72b4be87721807605e44297398b96f0 :: c:\Users\Arun\Github\Sublime
Traceback (most recent call last):
File "C:\Users\Arun\Anaconda3\Scripts\jupyter-notebook-script.py", line 5, in
sys.exit(notebook.notebookapp.main())
File "C:\Users\Arun\Anaconda3\lib\site-packages\jupyter_core\application.py", line 267, in launch_instance
return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
File "C:\Users\Arun\Anaconda3\lib\site-packages\traitlets\config\application.py", line 658, in launch_instance
app.start()
File "C:\Users\Arun\Anaconda3\lib\site-packages\notebook\notebookapp.py", line 1197, in start
super(NotebookApp, self).start()
File "C:\Users\Arun\Anaconda3\lib\site-packages\jupyter_core\application.py", line 256, in start
self.subapp.start()
File "C:\Users\Arun\Anaconda3\lib\site-packages\notebook\notebookapp.py", line 308, in start
for serverinfo in list_running_servers(self.runtime_dir):
File "C:\Users\Arun\Anaconda3\lib\site-packages\notebook\notebookapp.py", line 1278, in list_running_servers
info = json.load(f)
File "C:\Users\Arun\Anaconda3\lib\json_init_.py", line 299, in load
parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
File "C:\Users\Arun\Anaconda3\lib\json_init_.py", line 354, in loads
return _default_decoder.decode(s)
File "C:\Users\Arun\Anaconda3\lib\json\decoder.py", line 339, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "C:\Users\Arun\Anaconda3\lib\json\decoder.py", line 357, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)