If I had a dollar for every time I did an update without first doing a backup, I could buy a… can of Pepsi.
I don’t think I can help you, but what is your host computer and how is Home Assistant installed? Have you tried restarting the host? Do you have a keyboard and display on the host computer or is this over SSH? Can you access the command line to look at home-assistant.log? Did you install the Samba Share add-on? This shares the config folder and you could see it from another PC on your network.