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JuliaLang / IJulia.jl

Julia kernel for Jupyter
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Invalid signature error #1024

Open renatobellotti opened 2 years ago

renatobellotti commented 2 years ago

I get the following error message when I try to start a Julia kernel in a fresh anaconda installation:

$ jupyter-lab
[I 2021-10-01 10:14:19.414 ServerApp] jupyterlab | extension was successfully linked.
[W 2021-10-01 10:14:19.515 ServerApp] The module 'jupyterlab_late' could not be found. Are you sure the extension is installed?
[I 2021-10-01 10:14:19.515 ServerApp] nbclassic | extension was successfully linked.
[I 2021-10-01 10:14:19.532 ServerApp] nbclassic | extension was successfully loaded.
[I 2021-10-01 10:14:19.532 LabApp] JupyterLab extension loaded from /home/renato/.conda/envs/julia_env/lib/python3.9/site-packages/jupyterlab
[I 2021-10-01 10:14:19.532 LabApp] JupyterLab application directory is /home/renato/.conda/envs/julia_env/share/jupyter/lab
[I 2021-10-01 10:14:19.534 ServerApp] jupyterlab | extension was successfully loaded.
[I 2021-10-01 10:14:19.535 ServerApp] Serving notebooks from local directory: /home/renato/Dokumente/ETH/PhD/TA/HS_21_22/icp-exercises/exercise_sheets_2021
[I 2021-10-01 10:14:19.535 ServerApp] Jupyter Server 1.11.0 is running at:
[I 2021-10-01 10:14:19.535 ServerApp] http://localhost:8888/lab?token=9e3516f0d2edc661c9d1e69eece59e63517f2a8ee0c65a10
[I 2021-10-01 10:14:19.535 ServerApp]  or http://127.0.0.1:8888/lab?token=9e3516f0d2edc661c9d1e69eece59e63517f2a8ee0c65a10
[I 2021-10-01 10:14:19.535 ServerApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 2021-10-01 10:14:19.557 ServerApp] 

    To access the server, open this file in a browser:
        file:///home/renato/.local/share/jupyter/runtime/jpserver-41855-open.html
    Or copy and paste one of these URLs:
        http://localhost:8888/lab?token=9e3516f0d2edc661c9d1e69eece59e63517f2a8ee0c65a10
     or http://127.0.0.1:8888/lab?token=9e3516f0d2edc661c9d1e69eece59e63517f2a8ee0c65a10
[I 2021-10-01 10:14:23.421 LabApp] Build is up to date
[W 2021-10-01 10:14:31.929 ServerApp] Notebook 01/solution/solution_01.ipynb is not trusted
[I 2021-10-01 10:14:32.657 ServerApp] Kernel started: 82875722-5b4b-4176-b1f9-87d3892eba5a
[E 2021-10-01 10:14:37.349 ServerApp] Uncaught exception in ZMQStream callback
    Traceback (most recent call last):
      File "/home/renato/.conda/envs/julia_env/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 431, in _run_callback
        callback(*args, **kwargs)
      File "/home/renato/.conda/envs/julia_env/lib/python3.9/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 494, in record_activity
        msg = session.deserialize(fed_msg_list)
      File "/home/renato/.conda/envs/julia_env/lib/python3.9/site-packages/jupyter_client/session.py", line 1035, in deserialize
        raise ValueError("Invalid Signature: %r" % signature)
    ValueError: Invalid Signature: b'40f31faa80fd282fb7b370255bb2139f32de6ee32f8b2587409463157068b5a5a5f0535a438732b0e1b02eaa7cbaa2e0dd3b58d6d99d5cc812feb8e6070eb90f'
[E 2021-10-01 10:14:37.350 ServerApp] Uncaught exception in zmqstream callback
    Traceback (most recent call last):
      File "/home/renato/.conda/envs/julia_env/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 452, in _handle_events
        self._handle_recv()
      File "/home/renato/.conda/envs/julia_env/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 481, in _handle_recv
        self._run_callback(callback, msg)
      File "/home/renato/.conda/envs/julia_env/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 431, in _run_callback
        callback(*args, **kwargs)
      File "/home/renato/.conda/envs/julia_env/lib/python3.9/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 494, in record_activity
        msg = session.deserialize(fed_msg_list)
      File "/home/renato/.conda/envs/julia_env/lib/python3.9/site-packages/jupyter_client/session.py", line 1035, in deserialize
        raise ValueError("Invalid Signature: %r" % signature)
    ValueError: Invalid Signature: b'40f31faa80fd282fb7b370255bb2139f32de6ee32f8b2587409463157068b5a5a5f0535a438732b0e1b02eaa7cbaa2e0dd3b58d6d99d5cc812feb8e6070eb90f'
Exception in callback BaseAsyncIOLoop._handle_events(24, 1)
handle: <Handle BaseAsyncIOLoop._handle_events(24, 1)>
Traceback (most recent call last):
  File "/home/renato/.conda/envs/julia_env/lib/python3.9/asyncio/events.py", line 80, in _run
    self._context.run(self._callback, *self._args)
  File "/home/renato/.conda/envs/julia_env/lib/python3.9/site-packages/tornado/platform/asyncio.py", line 189, in _handle_events
    handler_func(fileobj, events)
  File "/home/renato/.conda/envs/julia_env/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 452, in _handle_events
    self._handle_recv()
  File "/home/renato/.conda/envs/julia_env/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 481, in _handle_recv
    self._run_callback(callback, msg)
  File "/home/renato/.conda/envs/julia_env/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 431, in _run_callback
    callback(*args, **kwargs)
  File "/home/renato/.conda/envs/julia_env/lib/python3.9/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 494, in record_activity
    msg = session.deserialize(fed_msg_list)
  File "/home/renato/.conda/envs/julia_env/lib/python3.9/site-packages/jupyter_client/session.py", line 1035, in deserialize
    raise ValueError("Invalid Signature: %r" % signature)
ValueError: Invalid Signature: b'40f31faa80fd282fb7b370255bb2139f32de6ee32f8b2587409463157068b5a5a5f0535a438732b0e1b02eaa7cbaa2e0dd3b58d6d99d5cc812feb8e6070eb90f'
Starting kernel event loops.

I think #421 is similar.

I mentioned my error already here, but I realised it is probably two errors that are not related to each other.

I hope we can fix this problem because right now I cannot use Julia on my machine.

gox6 commented 2 years ago

I have the same problem:

Config option `kernel_spec_manager_class` not recognized by `LabApp`.                                                                             
[W 2021-11-10 23:24:08.267 LabApp] Config option `kernel_spec_manager_class` not recognized by `LabApp`.                                                                             
[W 2021-11-10 23:24:08.274 LabApp] Config option `kernel_spec_manager_class` not recognized by `LabApp`.                                                                             
[I 2021-11-10 23:24:08.275 ServerApp] jupyterlab | extension was successfully linked.                                                                                                
[W 2021-11-10 23:24:08.278 NotebookApp] Config option `kernel_spec_manager_class` not recognized by `NotebookApp`.                                                                   
[W 2021-11-10 23:24:08.281 NotebookApp] Config option `kernel_spec_manager_class` not recognized by `NotebookApp`.                                                                   
[W 2021-11-10 23:24:08.286 NotebookApp] Config option `kernel_spec_manager_class` not recognized by `NotebookApp`.                                                                   
[I 2021-11-10 23:24:08.477 ServerApp] nbclassic | extension was successfully linked.                                                                                                 
[I 2021-11-10 23:24:08.815 ServerApp] [nb_conda_kernels] enabled, 7 kernels found                                                                                                    
[I 2021-11-10 23:24:08.842 ServerApp] nbclassic | extension was successfully loaded.                                                                                                 
[I 2021-11-10 23:24:08.843 LabApp] JupyterLab extension loaded from /home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/jupyterlab                                         
[I 2021-11-10 23:24:08.843 LabApp] JupyterLab application directory is /home/ubuntu/miniconda3/envs/jl16/share/jupyter/lab                                                           
[I 2021-11-10 23:24:08.847 ServerApp] jupyterlab | extension was successfully loaded.                                                                                                
[I 2021-11-10 23:24:08.848 ServerApp] Serving notebooks from local directory: /home/ubuntu                                                                                           
[I 2021-11-10 23:24:08.848 ServerApp] Jupyter Server 1.11.2 is running at:                                                                                                           
[I 2021-11-10 23:24:08.848 ServerApp] https://ec2-18-133-122-201.eu-west-2.compute.amazonaws.com:8846/lab?token=...                                                                  
[I 2021-11-10 23:24:08.848 ServerApp]  or https://127.0.0.1:8846/lab?token=...                                                                                                       
[I 2021-11-10 23:24:08.848 ServerApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).                                                      
[W 2021-11-10 23:24:31.683 LabApp] Could not determine jupyterlab build status without nodejs                                                                                        
[I 2021-11-10 23:24:35.048 ServerApp] Creating new notebook in                                                                                                                       
[I 2021-11-10 23:24:35.498 ServerApp] Kernel started: ad081e23-1d4a-4798-a75c-0ccbfec67548                                                                                           
[E 2021-11-10 23:24:44.516 ServerApp] Uncaught exception in ZMQStream callback                                                                                                       
    Traceback (most recent call last):                                                                                                                                               
      File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 431, in _run_callback                                                    
        callback(*args, **kwargs)                                                                                                                                                    
      File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 494, in record_activity                            
        msg = session.deserialize(fed_msg_list)                                                                                                                                      
      File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/jupyter_client/session.py", line 1054, in deserialize                                                      
        raise ValueError("Invalid Signature: %r" % signature)                                                                                                                        
    ValueError: Invalid Signature: b'858e49b8bb22057779343659edb24e0af624de158774b247f007a954e5e65f1dd43876649a024d4cf04b77ad1d27fe387a0858353586d6ceb54ea5627e948a31'               
[E 2021-11-10 23:24:44.517 ServerApp] Uncaught exception in zmqstream callback                                                                                                       
    Traceback (most recent call last):                                                                                                                                               
      File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 452, in _handle_events                                                   
        self._handle_recv()                                                                                                                                                          
      File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 481, in _handle_recv                                                     
        self._run_callback(callback, msg)                                                                                                                                            
      File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 431, in _run_callback                                                    
        callback(*args, **kwargs)                                                                                                                                                    
      File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 494, in record_activity                            
        msg = session.deserialize(fed_msg_list)                                                                                                                                      
      File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/jupyter_client/session.py", line 1054, in deserialize                                                      
        raise ValueError("Invalid Signature: %r" % signature)                                                                                                                        
    ValueError: Invalid Signature: b'858e49b8bb22057779343659edb24e0af624de158774b247f007a954e5e65f1dd43876649a024d4cf04b77ad1d27fe387a0858353586d6ceb54ea5627e948a31'               
Exception in callback BaseAsyncIOLoop._handle_events(24, 1)                                                                                                                          
handle: <Handle BaseAsyncIOLoop._handle_events(24, 1)>                                                                                                                               
Traceback (most recent call last):                                                                                                                                                   
  File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/asyncio/events.py", line 80, in _run                                                                                         
    self._context.run(self._callback, *self._args)                                                                                                                                   
  File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/tornado/platform/asyncio.py", line 189, in _handle_events                                                      
    handler_func(fileobj, events)                                                                                                                                                    
  File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 452, in _handle_events                                                       
    self._handle_recv()                                                                                                                                                              
  File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 481, in _handle_recv                                                         
    self._run_callback(callback, msg)                                                                                                                                                
  File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 431, in _run_callback                                                        
    callback(*args, **kwargs)                                                                                                                                                        
  File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 494, in record_activity                                
    msg = session.deserialize(fed_msg_list)                                                                                                                                          
  File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/jupyter_client/session.py", line 1054, in deserialize                                                          
    raise ValueError("Invalid Signature: %r" % signature)                                                                                                                            
ValueError: Invalid Signature: b'858e49b8bb22057779343659edb24e0af624de158774b247f007a954e5e65f1dd43876649a024d4cf04b77ad1d27fe387a0858353586d6ceb54ea5627e948a31'
Starting kernel event loops.
[W 2021-11-10 23:25:35.702 ServerApp] Timeout waiting for kernel_info reply from ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:25:40.217 ServerApp] Nudge: attempt 10 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:25:40.217 ServerApp] Nudge: attempt 10 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:25:40.442 ServerApp] Nudge: attempt 10 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:25:40.578 ServerApp] Nudge: attempt 10 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:25:45.229 ServerApp] Nudge: attempt 20 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:25:45.455 ServerApp] Nudge: attempt 20 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:25:45.591 ServerApp] Nudge: attempt 20 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:25:50.241 ServerApp] Nudge: attempt 30 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:25:50.469 ServerApp] Nudge: attempt 30 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:25:50.605 ServerApp] Nudge: attempt 30 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:25:55.255 ServerApp] Nudge: attempt 40 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:25:55.483 ServerApp] Nudge: attempt 40 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:25:55.619 ServerApp] Nudge: attempt 40 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:00.267 ServerApp] Nudge: attempt 50 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:00.496 ServerApp] Nudge: attempt 50 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:00.632 ServerApp] Nudge: attempt 50 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:05.280 ServerApp] Nudge: attempt 60 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:05.509 ServerApp] Nudge: attempt 60 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:05.645 ServerApp] Nudge: attempt 60 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:10.292 ServerApp] Nudge: attempt 70 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:10.522 ServerApp] Nudge: attempt 70 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:10.658 ServerApp] Nudge: attempt 70 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
^[[A^[[A[W 2021-11-10 23:26:15.304 ServerApp] Nudge: attempt 80 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:15.534 ServerApp] Nudge: attempt 80 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:15.670 ServerApp] Nudge: attempt 80 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:20.318 ServerApp] Nudge: attempt 90 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:20.548 ServerApp] Nudge: attempt 90 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:20.684 ServerApp] Nudge: attempt 90 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:25.330 ServerApp] Nudge: attempt 100 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:25.560 ServerApp] Nudge: attempt 100 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:25.696 ServerApp] Nudge: attempt 100 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:30.343 ServerApp] Nudge: attempt 110 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:30.573 ServerApp] Nudge: attempt 110 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:30.709 ServerApp] Nudge: attempt 110 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:35.357 ServerApp] Nudge: attempt 120 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[I 2021-11-10 23:26:35.436 ServerApp] Saving file at /Untitled2.ipynb
[W 2021-11-10 23:26:35.587 ServerApp] Nudge: attempt 120 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[E 2021-11-10 23:26:35.706 ServerApp] Uncaught exception GET /api/kernels/ad081e23-1d4a-4798-a75c-0ccbfec67548/channels?session_id=0590adf5-eeac-48d9-b2c8-2e8e5c519a2b (83.31.72.182
)
    HTTPServerRequest(protocol='https', host='ec2-18-133-122-201.eu-west-2.compute.amazonaws.com:8846', method='GET', uri='/api/kernels/ad081e23-1d4a-4798-a75c-0ccbfec67548/channels
?session_id=0590adf5-eeac-48d9-b2c8-2e8e5c519a2b', version='HTTP/1.1', remote_ip='83.31.72.182')
    Traceback (most recent call last):
      File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/tornado/websocket.py", line 956, in _accept_connection
        await open_result
    tornado.util.TimeoutError: Timeout
[W 2021-11-10 23:26:35.723 ServerApp] Nudge: attempt 120 on kernel ad081e23-1d4a-4798-a75c-0ccbfec67548
[W 2021-11-10 23:26:35.837 ServerApp] Replacing stale connection: ad081e23-1d4a-4798-a75c-0ccbfec67548:0590adf5-eeac-48d9-b2c8-2e8e5c519a2b
[E 2021-11-10 23:26:35.931 ServerApp] Uncaught exception GET /api/kernels/ad081e23-1d4a-4798-a75c-0ccbfec67548/channels?session_id=e870a84c-02ea-4bc2-a260-d4a3ca518229 (83.31.72.182
)
    HTTPServerRequest(protocol='https', host='ec2-18-133-122-201.eu-west-2.compute.amazonaws.com:8846', method='GET', uri='/api/kernels/ad081e23-1d4a-4798-a75c-0ccbfec67548/channels
?session_id=e870a84c-02ea-4bc2-a260-d4a3ca518229', version='HTTP/1.1', remote_ip='83.31.72.182')
    Traceback (most recent call last):
      File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/tornado/websocket.py", line 956, in _accept_connection
        await open_result
    tornado.util.TimeoutError: Timeout
[E 2021-11-10 23:26:36.066 ServerApp] Uncaught exception GET /api/kernels/ad081e23-1d4a-4798-a75c-0ccbfec67548/channels?session_id=bf50bd28-a75b-4462-8580-70f7cdae700b (83.31.72.182
)
    HTTPServerRequest(protocol='https', host='ec2-18-133-122-201.eu-west-2.compute.amazonaws.com:8846', method='GET', uri='/api/kernels/ad081e23-1d4a-4798-a75c-0ccbfec67548/channels
?session_id=bf50bd28-a75b-4462-8580-70f7cdae700b', version='HTTP/1.1', remote_ip='83.31.72.182')
    Traceback (most recent call last):
      File "/home/ubuntu/miniconda3/envs/jl16/lib/python3.9/site-packages/tornado/websocket.py", line 956, in _accept_connection
        await open_result
    tornado.util.TimeoutError: Timeout
[W 2021-11-10 23:27:05.930 ServerApp] WebSocket ping timeout after 90000 ms.
shhgs commented 2 years ago

I also met with this problem. I am using Julia 1.6.4. Python 3.9.7 and jupyter 6.4.6.

The error message is 

Dec 16 22:04:19 jhuang-centos8 jupyter[936610]: [E 22:04:19.430 NotebookApp] Uncaught exception in ZMQStream callback                                                                                              
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:     Traceback (most recent call last):
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:       File "/opt/shhgs/conda/envs/py39/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 431, in _run_callback
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:         callback(*args, **kwargs)
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:       File "/opt/shhgs/conda/envs/py39/lib/python3.9/site-packages/notebook/services/kernels/kernelmanager.py", line 418, in record_activity
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:         msg = session.deserialize(fed_msg_list)
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:       File "/opt/shhgs/conda/envs/py39/lib/python3.9/site-packages/jupyter_client/session.py", line 1054, in deserialize
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:         raise ValueError("Invalid Signature: %r" % signature)
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:     ValueError: Invalid Signature: b'0cab9fa7f11dd363c3127a4f8aa431bb6bbb981f04e55d3151425c6ddac3d62b7dbebbbe4c7d599dc540c5b8e2366ebdf1e0df34ef00a0cd22476caabf7e21e2'
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]: [E 22:04:19.431 NotebookApp] Uncaught exception in zmqstream callback
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:     Traceback (most recent call last):
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:       File "/opt/shhgs/conda/envs/py39/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 448, in _handle_events
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:         self._handle_recv()
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:       File "/opt/shhgs/conda/envs/py39/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 477, in _handle_recv
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:         self._run_callback(callback, msg)
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:       File "/opt/shhgs/conda/envs/py39/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 431, in _run_callback
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:         callback(*args, **kwargs)
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:       File "/opt/shhgs/conda/envs/py39/lib/python3.9/site-packages/notebook/services/kernels/kernelmanager.py", line 418, in record_activity
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:         msg = session.deserialize(fed_msg_list)
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:       File "/opt/shhgs/conda/envs/py39/lib/python3.9/site-packages/jupyter_client/session.py", line 1054, in deserialize
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:         raise ValueError("Invalid Signature: %r" % signature)
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:     ValueError: Invalid Signature: b'0cab9fa7f11dd363c3127a4f8aa431bb6bbb981f04e55d3151425c6ddac3d62b7dbebbbe4c7d599dc540c5b8e2366ebdf1e0df34ef00a0cd22476caabf7e21e2'
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]: ERROR:asyncio:Exception in callback BaseAsyncIOLoop._handle_events(20, 1)
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]: handle: <Handle BaseAsyncIOLoop._handle_events(20, 1)>
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]: Traceback (most recent call last):
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:   File "/opt/shhgs/conda/envs/py39/lib/python3.9/asyncio/events.py", line 80, in _run
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:     self._context.run(self._callback, *self._args)
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:   File "/opt/shhgs/conda/envs/py39/lib/python3.9/site-packages/tornado/platform/asyncio.py", line 189, in _handle_events
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:     handler_func(fileobj, events)
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:   File "/opt/shhgs/conda/envs/py39/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 448, in _handle_events
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:     self._handle_recv()
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:   File "/opt/shhgs/conda/envs/py39/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 477, in _handle_recv
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:     self._run_callback(callback, msg)
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:   File "/opt/shhgs/conda/envs/py39/lib/python3.9/site-packages/zmq/eventloop/zmqstream.py", line 431, in _run_callback
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:     callback(*args, **kwargs)
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:   File "/opt/shhgs/conda/envs/py39/lib/python3.9/site-packages/notebook/services/kernels/kernelmanager.py", line 418, in record_activity
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:     msg = session.deserialize(fed_msg_list)
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:   File "/opt/shhgs/conda/envs/py39/lib/python3.9/site-packages/jupyter_client/session.py", line 1054, in deserialize
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]:     raise ValueError("Invalid Signature: %r" % signature)
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]: ValueError: Invalid Signature: b'0cab9fa7f11dd363c3127a4f8aa431bb6bbb981f04e55d3151425c6ddac3d62b7dbebbbe4c7d599dc540c5b8e2366ebdf1e0df34ef00a0cd22476caabf7e21e2'
Dec 16 22:04:19 jhuang-centos8 jupyter[936610]: Starting kernel event loops.
gox6 commented 2 years ago

In my case the root cause for the above error was that I was installing Julia in Conda Env for Python. Once I deactivated Conda, installed Julia it started to work and with nb_conda_kernels I got Julia Env in JupytetLab.