Kernel Error; can't start the kernel on Jupyter lab&notebook

Hi there,

Questions:

  1. Should I manually make the folder “C46DA2C6-FFEA-4E1B-A730-843017B7F96E/d/Julia-1.6.app/Contents/Resources/julia/bin/julia” under AppTranslocation?
  2. Suppose I make the path above, does it work?
  3. In the first place, why is it that there’s no such folder?

Background:
I’m not familiar with computer science and am new to Julia. When I tried opening a new file on both Jupyterlab and notebook, I got “Unhandled error” and can’t start the kernel, which says

Traceback (most recent call last):
  File "/opt/anaconda3/lib/python3.8/site-packages/tornado/web.py", line 1704, in _execute
    result = await result
  File "/opt/anaconda3/lib/python3.8/asyncio/tasks.py", line 349, in __wakeup
    future.result()
  File "/opt/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 769, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "/opt/anaconda3/lib/python3.8/site-packages/notebook/services/sessions/handlers.py", line 74, in post
    model = yield maybe_future(
  File "/opt/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 762, in run
    value = future.result()
  File "/opt/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 769, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "/opt/anaconda3/lib/python3.8/site-packages/notebook/services/sessions/sessionmanager.py", line 98, in create_session
    kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
  File "/opt/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 762, in run
    value = future.result()
  File "/opt/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 769, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "/opt/anaconda3/lib/python3.8/site-packages/notebook/services/sessions/sessionmanager.py", line 110, in start_kernel_for_session
    kernel_id = yield maybe_future(
  File "/opt/anaconda3/lib/python3.8/site-packages/tornado/gen.py", line 762, in run
    value = future.result()
  File "/opt/anaconda3/lib/python3.8/asyncio/futures.py", line 178, in result
    raise self._exception
  File "/opt/anaconda3/lib/python3.8/asyncio/tasks.py", line 280, in __step
    result = coro.send(None)
  File "/opt/anaconda3/lib/python3.8/site-packages/notebook/services/kernels/kernelmanager.py", line 176, in start_kernel
    kernel_id = await maybe_future(self.pinned_superclass.start_kernel(self, **kwargs))
  File "/opt/anaconda3/lib/python3.8/site-packages/jupyter_client/utils.py", line 26, in wrapped
    raise e
  File "/opt/anaconda3/lib/python3.8/site-packages/jupyter_client/utils.py", line 23, in wrapped
    return loop.run_until_complete(future)
  File "/opt/anaconda3/lib/python3.8/site-packages/nest_asyncio.py", line 70, in run_until_complete
    return f.result()
  File "/opt/anaconda3/lib/python3.8/asyncio/futures.py", line 178, in result
    raise self._exception
  File "/opt/anaconda3/lib/python3.8/asyncio/tasks.py", line 280, in __step
    result = coro.send(None)
  File "/opt/anaconda3/lib/python3.8/site-packages/jupyter_client/multikernelmanager.py", line 186, in _async_start_kernel
    self._add_kernel_when_ready(kernel_id, km, ensure_async(km.start_kernel(**kwargs)))
  File "/opt/anaconda3/lib/python3.8/site-packages/jupyter_client/utils.py", line 26, in wrapped
    raise e
  File "/opt/anaconda3/lib/python3.8/site-packages/jupyter_client/utils.py", line 23, in wrapped
    return loop.run_until_complete(future)
  File "/opt/anaconda3/lib/python3.8/site-packages/nest_asyncio.py", line 70, in run_until_complete
    return f.result()
  File "/opt/anaconda3/lib/python3.8/asyncio/futures.py", line 178, in result
    raise self._exception
  File "/opt/anaconda3/lib/python3.8/asyncio/tasks.py", line 280, in __step
    result = coro.send(None)
  File "/opt/anaconda3/lib/python3.8/site-packages/jupyter_client/manager.py", line 336, in _async_start_kernel
    await ensure_async(self._launch_kernel(kernel_cmd, **kw))
  File "/opt/anaconda3/lib/python3.8/site-packages/jupyter_client/utils.py", line 26, in wrapped
    raise e
  File "/opt/anaconda3/lib/python3.8/site-packages/jupyter_client/utils.py", line 23, in wrapped
    return loop.run_until_complete(future)
  File "/opt/anaconda3/lib/python3.8/site-packages/nest_asyncio.py", line 70, in run_until_complete
    return f.result()
  File "/opt/anaconda3/lib/python3.8/asyncio/futures.py", line 178, in result
    raise self._exception
  File "/opt/anaconda3/lib/python3.8/asyncio/tasks.py", line 280, in __step
    result = coro.send(None)
  File "/opt/anaconda3/lib/python3.8/site-packages/jupyter_client/manager.py", line 257, in _async_launch_kernel
    connection_info = await self.provisioner.launch_kernel(kernel_cmd, **kw)
  File "/opt/anaconda3/lib/python3.8/site-packages/jupyter_client/provisioning/local_provisioner.py", line 179, in launch_kernel
    self.process = launch_kernel(cmd, **scrubbed_kwargs)
  File "/opt/anaconda3/lib/python3.8/site-packages/jupyter_client/launcher.py", line 169, in launch_kernel
    raise ex
  File "/opt/anaconda3/lib/python3.8/site-packages/jupyter_client/launcher.py", line 157, in launch_kernel
    proc = Popen(cmd, **kwargs)
  File "/opt/anaconda3/lib/python3.8/subprocess.py", line 858, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/opt/anaconda3/lib/python3.8/subprocess.py", line 1704, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: '/private/var/folders/2l/4g5bjb55503d7ytcwc5bl8wh0000gn/T/AppTranslocation/C46DA2C6-FFEA-4E1B-A730-843017B7F96E/d/Julia-1.6.app/Contents/Resources/julia/bin/julia'

I figured out there is no such folder called C46DA2C6-FFEA-4E1B-A730-843017B7F96E. It seems like this “AppTranslocation” thing is something related to the security system of the Macbook (I’m not so sure).
By the way, I opened Jupyter notebook & lab via Visual Studio Code (I don’t know it’s related to this error, though)
The version of the systems are below;

  • Julia: 1.6.4 (2021-11-19)
  • conda: 4.11.0
  • Python: 3.9.9
    And I already added IJulia to the package.

Does anybody know how to fix this and start the kernel?

I’m having a very similar issue. Was this ever resolved? If so, how?

These errors can be very specific to an individual’s set-up.
Can you give an exact description of the errors you are seeing in your case?