Enable NotificationListenerService not showing for app in Settings - Android Studio - Java

I am a bit new to android development and was trying to make an application which listens to new notifications appearing on my device but when I go to enable the settings using the following statement, I don't get my app name in the settings. I have gone through the Android developers NotificationListenerService and added the service AndroidMainfest. I open the settings activity by this Intent:

Intent intent = new Intent("android.settings.NOTIFICATION_LISTENER_SETTINGS");

The following is my NotificationListener class

public class NotificationListener extends NotificationListenerService {
    private final String TAG = this.getClass().getSimpleName();
    private final String Notification_Settings = "android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS";

    @Override
    public void onCreate() {
        super.onCreate();
        startActivity(new Intent(Notification_Settings));
    }

    @Override
    public void onNotificationPosted(StatusBarNotification sbn) {
        Bundle extras = sbn.getNotification().extras;
        String title = extras.getString("android.title");
        String text = extras.getCharSequence("android.text").toString();
        Log.i(TAG, title + " " + text);
    }

    @Override
    public IBinder onBind(Intent i) {
        return super.onBind(i);
    }
}

And finally, I call the service in the main activity

Intent i = new Intent(getApplicationContext(), NotificationListener.class);
startService(i);

I could not figure out what had I missed. Please help me. Thank you!

Edit:

Service in AndroidManifest:

<service android:name=".NotificationListener"
    android:label="@string/app_name"
    android:permission="android.permission.BIND_NOTIFICATION_lISTENER_SERVICE">
    <intent-filter>
        <action android:name="android.service.notification.NotificationListenerService" />
    </intent-filter>
</service>

As pointed out by @Pawel I checked the manifest and noticed the 'L' in the

android:permission="android.permission.BIND_NOTIFICATION_lISTENER_SERVICE">
                                                         ^

is a small one.