Failed to find provider info for com.example.serialprovider.provider.SampleProvider

I've been trying to get data from another app's custom ContentProvider class but I keep getting this error: Failed to find provider info for com.example.serialprovider.provider.SampleProvider..

I searched a lot for similar issues online but still didn't know what's wrong, I checked the manifest multiple times, and I even took a copy of the authorities attribute to use it in the receiver app but still, the receiver app can't find the provider.

Here's the declaration in the manifest:

<provider
    android:name=".provider.SampleProvider"
    android:authorities="com.example.serialprovider.provider.SampleProvider"
    android:enabled="true"
    android:exported="true" />

and here's the implementation of onCreate and query methods in the Provider class (I'm using RoomDatabase):

public class SampleProvider extends ContentProvider {
    
    public SampleProvider() {
    }

    private static final String AUTHORITY = "com.example.serialprovider.provider.SampleProvider";
    private static final String TABLE_NAME = "devicepin";

    private static final UriMatcher sURIMatcher = new UriMatcher(UriMatcher.NO_MATCH);

    static {
        sURIMatcher.addURI(AUTHORITY, TABLE_NAME, 1);
    }

    @Override
    public boolean onCreate() {
        return true;
    }

    @Override
    public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
        if (sURIMatcher.match(uri) == 1) {
            final Context context = getContext();
            AppDao dao = DatabaseClient.getInstance(context).getAppDatabase().appDao();
            final Cursor cursor = dao.get();
            cursor.setNotificationUri(getContext().getContentResolver(), uri);
            cursor.close();
            return cursor;
        } else {
            throw new IllegalArgumentException("Unknown URI: " + uri);
        }
    }
}

and here's how I try to get the cursor in the other app "receiver":

private void getPin(){
    new Thread(() -> {
        ContentResolver resolver = getContentResolver();
        try{
            Cursor cursor = resolver.query(Uri.parse("content://com.example.serialprovider.provider.SampleProvider/devciepin"), null, null, null, null);
            cursor.close();
        }
        catch (Exception e){
            e.printStackTrace();
        }
    }).start();
}

cursor is always null, when I surround it with try and catch blocks, the "failed to find provider info" is what I get as an exception.