firebase-auth | Firebase v3 Authentication - Full Working Example | Authentication library

I was working on my project perfectly since I Update my phone to Android 12 unfortunately when I run the project to my phone this Error appears:

Installation did not succeed. The application could not be installed: INSTALL_PARSE_FAILED_MANIFEST_MALFORMED

List of apks: [0] 'C:\Users\Microsoft\AndroidStudioProjects\YmmyServer\app\build\outputs\apk\debug\app-debug.apk' Installation failed due to: 'null' Retry

This is My build.gradle(Project) File:

I'm developping an app using Flutter and Firebase Authentication.
I try to add the Apple Sign In in my Login page.
I'm following this tutorial https://dev.to/offlineprogrammer/flutter-firebase-authentication-apple-sign-in-1m64.
It works, Apple open the component in which I can log into

But when I want to insert my Password, it loads infinitly. If I put a wrong password, it failed immediately

I havn't any log, my code is stuck at

After upgrading to android 12, the application is not compiling. It shows

"Manifest merger failed with multiple errors, see logs"

Error showing in Merged manifest:

Merging Errors: Error: android:exported needs to be explicitly specified for . Apps targeting Android 12 and higher are required to specify an explicit value for android:exported when the corresponding component has an intent filter defined. See https://developer.android.com/guide/topics/manifest/activity-element#exported for details. main manifest (this file)

I have set all the activity with android:exported="false". But it is still showing this issue.

My manifest file:

I am creating an app in Android Studio IDE using Java, but whenever I build my project this error comes:

Merging Errors: Error: android:exported needs to be explicitly specified for element . Apps targeting Android 12 and higher are required to specify an explicit value for android:exported when the corresponding component has an intent filter defined. See https://developer.android.com/guide/topics/manifest/activity-element#exported for details. test.app main manifest (this file), line 19

I don't even know what to do. I struggled with this mistake for a whole week, but I couldn't.

Here is my sdk version

I'm receving the below error in API 31 devices during Firebase Auth UI library(Only Phone number credential),

I searched for a long time on the Internet how to solve this error but did not find it.I tried to do a search as written here, but I did not find anything, maybe because I do not understand how to use it. What is this error? How to solve it? Help me pls. P.S. Any necessary files or additional information I can add.

Duplicate class androidx.lifecycle.DefaultLifecycleObserver found in modules lifecycle-common-2.4.0.jar (androidx.lifecycle:lifecycle-common:2.4.0) and lifecycle-common-java8-2.3.0.jar (androidx.lifecycle:lifecycle-common-java8:2.3.0)

in a VueJS / QuasarJS application Im using firebase-js-sdk [1] together with firebaseui-web [2] to handle authentication.

After successful auth with any of the configured providers (e.g. password, google, apple, etc) I want to check which provider the user used. But immediately after successful authentication the user.providerData[] array that should contain the information is empty.

BUT if I reload my app the user.providerData[] array is suddenly populated correctly.

I´m checking for user data with something like this

I am following the official Google tutorial example to include Firebase via CDN instead of the SDK:

https://firebase.google.com/docs/web/alt-setup#from-the-cdn

After copying the example verbatim: