Server certificate not trustworthy - app crash when opened

[ToHeld]

⚠️ Before posting ⚠️

• [X] This is a bug, not a question or an enhancement.
• [X] I've searched for similar issues and didn't find a duplicate.
• [X] I've written a clear and descriptive title for this issue, not just "Bug" or "Crash".
• [X] I agree to follow Nextcloud's Code of Conduct.

Steps to reproduce

1. Notification: upload failed, due to certificate
2. Open App,
3. wait a few seconds looking at your top level directory,
4. crash

Expected behaviour

Ignore certificate

Actual behaviour

Failed upload and crash when opened app

Android version

11

Device brand and model

Fairphone 4

Stock or custom OS?

Stock

Nextcloud android app version

3.22.1 (October 20, 2022)

Nextcloud server version

24.0.5

Using a reverse proxy?

I don't know

Android logs

Cause of error

Exception in thread "main" java.lang.NullPointerException: Attempt to invoke virtual method 'android.widget.LinearLayout com.owncloud.android.databinding.SslUntrustedCertLayoutBinding.getRoot()' on a null object reference
    at com.owncloud.android.ui.dialog.SslUntrustedCertDialog.onCreateDialog(SslUntrustedCertDialog.java:173)
    at androidx.fragment.app.DialogFragment.prepareDialog(DialogFragment.java:665)
    at androidx.fragment.app.DialogFragment.onGetLayoutInflater(DialogFragment.java:579)
    at androidx.fragment.app.Fragment.performGetLayoutInflater(Fragment.java:1752)
    at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:493)
    at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:261)
    at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:1899)
    at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1817)
    at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:1760)
    at androidx.fragment.app.FragmentManager$5.run(FragmentManager.java:547)
    at android.os.Handler.handleCallback(Handler.java:938)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:223)
    at android.app.ActivityThread.main(ActivityThread.java:7715)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:952)

App information

• ID: com.nextcloud.client
• Version: 30220190
• Build flavor: gplay

Device information

• Brand: Fairphone
• Device: FP4
• Model: FP4
• Id: RKQ1.210503.001
• Product: FP4eea

Firmware

• SDK: 30
• Release: 11
• Incremental: FP4G

Server error logs

No response

Additional information

First ever bug report. Feedback is welcome :)

[AlvaroBrey]

Duplicate of #10868