App not installed from package as appears to be invalid

[msdosfx]

• I have searched open and closed issues for duplicates
• I am submitting a bug report for existing functionality that does not work as intended
• I have read https://github.com/signalapp/Signal-Android/wiki/Submitting-useful-bug-reports
• This isn't a feature request or a discussion topic

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Bug description

I had a testing version of Signal installed via firebase. I wished to return to the stable release. Attempting to install Signal messenger from Signal.org and from signal.org/android/apk/ using Obtainium and I get a failed install from either with the error saying it is an Invalid Package [Signal]

Attempting to install the APK from the browser on my phone I get the similar error "App not installed as package appears to be invalid"

I don't wish to install the package from the google play store.

Steps to reproduce

• Go to signal.org/android/apk in Mull
• Download the apk
• Open the APK
• Do you want to install this app? Yes and Allow Network Permission
• click Install

Actual result: Describe here what happens after you run the steps above (i.e. the buggy behaviour) Signal App not installed as package appears to be invalid
Expected result: Describe here what should happen after you run the steps above (i.e. what would be the correct behaviour) App should install

Screenshots

Device info

Device: Pixel 4a
Android version: GrapheneOS Android 13
Signal version: Stable 7.2.4 from signal.org/android/apk

Link to debug log