Can't run installed PWA apps -Failed to read the configuration file. Please contact your system administrator.

[skoruppa]

Description

When I try to launch Teams with PWAsForFirefox on my Ubuntu 22.04 Installation i receive an error
"Failed to read the configuration file. Please contact your system administrator."

And after that, a new empty Firefox window is opened with a question about making it a default browser.
I tried reinstalling the extension, runtime, pwa an it always ends on with the same error message

Nothing interesting in logs

firefoxpwa site launch 01J14S02B83BGYRP8S65V0HG9N -- --jsconsole
09:27:45 <font color="#12488B">[INFO] </font>Patching the runtime
09:27:45 <font color="#12488B">[INFO] </font>Runtime patched!
09:27:45 <font color="#12488B">[INFO] </font>Patching the profile
09:27:45 <font color="#12488B">[INFO] </font>Profile patched!
09:27:45 <font color="#12488B">[INFO] </font>Launching the web app

and I see one interesting warning in browser's console but I don't know if it is related

Extension/connector is in the latest version - 2.12.1 just like Firefox - 128.0b6

Steps to Reproduce

1. Go to (https://teams.microsoft.com/v2/)
2. Click on install PWA button in the url navigation bar
3. Install PWA in a new profile
4. Try to run the PWA
5. Error is thrown
   
6. After accepting it, a new empty Firefox window is open
   

Environment

• Operating system: Ubuntu 22.04
• System architecture: x86
• Desktop environment: Gnome
• Installation method: DEB
• PWAsForFirefox extension version: 2.12.1
• PWAsForFirefox native version: 2.12.1
• PWAsForFirefox runtime version: 2.12.1
• Firefox version: 128.0b6

[filips123]

Please try to run "Patch profiles and runtime" from the extension settings and relaunch your PWA. Also, try to install a new PWA into a separate profile and check if it works there.

[skoruppa]

Please try to run "Patch profiles and runtime" from the extension settings and relaunch your PWA. Also, try to install a new PWA into a separate profile and check if it works there.

Tried everything. I have done "Patch profiles and runtime" countless times before reporting this bug. I just created a new profile, installed PWA there and have the exact same issue