Installation help

I’m running an Ubuntu system trying to (re)install the home assistant supervised method - Installation - Home Assistant

I am getting this error in the web ui -

Unable to load the panel source: /api/hassio/app/entrypoint.js.

I reinstalled the supervised method and got up and running before bed last night, but now this morning, I’m seeing the same panel error on the UI plus this in the logs:

2020-04-05 08:36:06 ERROR (MainThread) [homeassistant.components.hassio.handler] /homeassistant/options return code 403.
2020-04-05 08:36:06 ERROR (MainThread) [homeassistant.components.hassio.handler] /supervisor/options return code 403.
2020-04-05 08:36:06 ERROR (MainThread) [homeassistant.components.hassio.handler] /homeassistant/info return code 403.
2020-04-05 08:36:06 WARNING (MainThread) [homeassistant.components.hassio] Can't read last version: 
2020-04-05 08:36:06 ERROR (MainThread) [homeassistant.components.hassio.handler] /ingress/panels return code 403.
2020-04-05 08:36:06 ERROR (MainThread) [homeassistant.components.hassio.addon_panel] Can't read panel info: 
2020-04-05 08:36:11 ERROR (MainThread) [homeassistant.components.hassio.handler] /discovery return code 403.
2020-04-05 08:36:11 ERROR (MainThread) [homeassistant.components.hassio.discovery] Can't read discover info: 

Can someone please help? I’ve been fighting this for a while now.

And I cannot find where my /config directory is on the filesystem. When I’ve installed this previously, it was always located at $HOME/hassio/homeassistant/ using (the old?) command curl -sL "https://raw.githubusercontent.com/home-assistant/hassio-installer/master/hassio_install.sh" | bash -s

Your config directory should be under

/usr/share/hassio/homeassistant

well, knowing the config directory will not solve the installation problem reported in above copied home-assistant.log messages.

I have the same problem (logs entries).

Would be nice to have a link to the solution.