ImportError: Symbol not found: ____chkstk_darwin; Also unable to write venv.json

[Kallaste]

I am getting repeated crashing on first run attempts of Mu Editor v.1.2.0 on MacOS 10.13.6. The error about the libsodium build seems to indicate that this is a compatibility issue that would be solved by upgrading to MacOS 10.15, but that is not currently an option, so I am hoping for a workaround. Older versions of Mu will run on this machine, but will not work with the device I am flashing. (I would be just as happy with a way to use my micro bit V2 with an old version of Mu Editor.)

The application simply crashes when clicked, but here is the error it throws when run from the terminal:

No settings file found at /Users/tatiana/Library/Application Support/mu/venv.json; skipping 
Traceback (most recent call last):
  File "/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/site-packages/mu/__main__.py", line 1, in <module>
    from mu.app import run
  File "/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/site-packages/mu/app.py", line 48, in <module>
    from .modes import (
  File "/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/site-packages/mu/modes/__init__.py", line 1, in <module>
    from .python3 import PythonMode
  File "/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/site-packages/mu/modes/python3.py", line 27, in <module>
    from qtconsole.manager import QtKernelManager
  File "/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/site-packages/qtconsole/manager.py", line 9, in <module>
    from jupyter_client import KernelManager
  File "/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/site-packages/jupyter_client/__init__.py", line 4, in <module>
    from .connect import *
  File "/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/site-packages/jupyter_client/connect.py", line 21, in <module>
    import zmq
  File "/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/site-packages/zmq/__init__.py", line 103, in <module>
    from zmq import backend
  File "/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/site-packages/zmq/backend/__init__.py", line 31, in <module>
    raise original_error from None
  File "/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/site-packages/zmq/backend/__init__.py", line 26, in <module>
    _ns = select_backend(first)
  File "/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/site-packages/zmq/backend/select.py", line 31, in select_backend
    mod = import_module(name)
  File "/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/site-packages/zmq/backend/cython/__init__.py", line 6, in <module>
    from . import (
ImportError: dlopen(/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/site-packages/zmq/backend/cython/_device.cpython-38-darwin.so, 2): Symbol not found: ____chkstk_darwin
  Referenced from: /Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/site-packages/zmq/backend/cython/../../.dylibs/libsodium.23.dylib (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib
 in /Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/site-packages/zmq/backend/cython/../../.dylibs/libsodium.23.dylib
Unable to write settings to /Users/tatiana/Library/Application Support/mu/venv.json:
{
  "dirpath": "/Users/tatiana/Library/Application Support/mu/mu_venv-38-20231226-173033"
}
Traceback (most recent call last):
  File "/Applications/Mu Editor.app/Contents/Resources/Python/lib/python3.8/site-packages/mu/settings.py", line 181, in save
    with open(saving_to_filepath, "w", encoding="utf-8") as f:
FileNotFoundError: [Errno 2] No such file or directory: '/Users/tatiana/Library/Application Support/mu/venv.json'

Please note: This issue may be the same as issue 2471, here: #2471

[carlosperate]

Thanks for the report @Kallaste, could you attach the full log here?
You should be able to find it in ~/Library/Logs/mu/mu.log

[Kallaste]

Thanks for the response. I have attached the log.

mu.log