I have JupyterLab/JupyterNotebook running on Win10, along with Python and PyCharm on the side on Windows 10. Whenever I launch JupyterLab/JupyterNotebook I get the error stated below. I have tried reinstalling the Anaconda-distribution or any other instances of Python but it gives me the same error every time I launch JupyterLab/Notebook. I have also tried running it on a remote server with Win 7 but it gives me the exact same error. Part of me thinks that I made the same mistake while installing Anaconda, Python, and PyCharm and now I can’t revert it back. Any suggestions?
Traceback (most recent call last): File "E:anaconda3libsite-packagestornadoweb.py", line 1543, in _execute result = yield result File "E:anaconda3libsite-packagestornadogen.py", line 1099, in run value = future.result() File "E:anaconda3libsite-packagestornadogen.py", line 1107, in run yielded = self.gen.throw(*exc_info) File "E:anaconda3libsite-packagesnotebookservicessessionshandlers.py", line 73, in post type=mtype)) File "E:anaconda3libsite-packagestornadogen.py", line 1099, in run value = future.result() File "E:anaconda3libsite-packagestornadogen.py", line 1107, in run yielded = self.gen.throw(*exc_info) File "E:anaconda3libsite-packagesnotebookservicessessionssessionmanager.py", line 79, in create_session kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name) File "E:anaconda3libsite-packagestornadogen.py", line 1099, in run value = future.result() File "E:anaconda3libsite-packagestornadogen.py", line 1107, in run yielded = self.gen.throw(*exc_info) File "E:anaconda3libsite-packagesnotebookservicessessionssessionmanager.py", line 92, in start_kernel_for_session self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name) File "E:anaconda3libsite-packagestornadogen.py", line 1099, in run value = future.result() File "E:anaconda3libsite-packagestornadogen.py", line 315, in wrapper yielded = next(result) File "E:anaconda3libsite-packagesnotebookserviceskernelskernelmanager.py", line 148, in start_kernel super(MappingKernelManager, self).start_kernel(**kwargs) File "E:anaconda3libsite-packagesjupyter_clientmultikernelmanager.py", line 110, in start_kernel km.start_kernel(**kwargs) File "E:anaconda3libsite-packagesjupyter_clientmanager.py", line 259, in start_kernel **kw) File "E:anaconda3libsite-packagesjupyter_clientmanager.py", line 204, in _launch_kernel return launch_kernel(kernel_cmd, **kw) File "E:anaconda3libsite-packagesjupyter_clientlauncher.py", line 128, in launch_kernel proc = Popen(cmd, **kwargs) File "E:anaconda3libsubprocess.py", line 709, in __init__ restore_signals, start_new_session) File "E:anaconda3libsubprocess.py", line 997, in _execute_child startupinfo) FileNotFoundError: [WinError 2] The system cannot find the file specified
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Answer
It seemed it had something to do with nb_conda. Once I reinstalled nb_conda using the command below, it worked for me.
conda install nb_conda