Anaconda navigator won't launch

MacOS 12.6
Hi, I am desperate :slight_smile:
It all started with Spyder not opening because of some issue with pyQt.
Following online advice, I uninstalled pyQt, after which Anaconda Navigator stopped launching entirely : the app looks like it’s about to launch, then the icon disappears.
I uninstalled Anaconda from the terminal, reinstalled it and it still won’t work (I also updated my Mac but it did not help).

I tried opening Anaconda Navigator through the terminal using anaconda-navigator, but this is what I get:

Traceback (most recent call last):
  File "/Users/irenebernardi/opt/anaconda3/bin/anaconda-navigator", line 7, in <module>
    from import main
  File "/Users/irenebernardi/opt/anaconda3/lib/python3.9/site-packages/anaconda_navigator/app/", line 19, in <module>
    from import start_app
  File "/Users/irenebernardi/opt/anaconda3/lib/python3.9/site-packages/anaconda_navigator/app/", line 27, in <module>
    from anaconda_navigator.widgets.main_window import MainWindow
  File "/Users/irenebernardi/opt/anaconda3/lib/python3.9/site-packages/anaconda_navigator/widgets/main_window/", line 25, in <module>
    from anaconda_navigator.api.anaconda_api import AnacondaAPI
  File "/Users/irenebernardi/opt/anaconda3/lib/python3.9/site-packages/anaconda_navigator/api/", line 30, in <module>
    from anaconda_navigator.api.client_api import ClientAPI
  File "/Users/irenebernardi/opt/anaconda3/lib/python3.9/site-packages/anaconda_navigator/api/", line 23, in <module>
    import binstar_client
ValueError: source code string cannot contain null bytes

If you have any help, please know I would immensely appreciate it.
Currently I cannot get any work done.
Thank you :slight_smile: