The application builds successfully but doesn't open, on opening it, I get a dialog saying "APP Keeps Stopping". This was after I changed the android:name to ".MyApplication".

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    package="com.example.mttnapp">

    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
    <uses-permission android:name="android.permission.VIBRATE" />

    <application
        android:name=""
        android:label="MTTN"
        tools:replace="android:label"
        android:icon="@mipmap/ic_launcher">
        <activity
            android:name=".MainActivity"
            android:launchMode="singleTop"
            android:theme="@style/LaunchTheme"
            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density"
            android:hardwareAccelerated="true"
            android:windowSoftInputMode="adjustResize">

            <meta-data
                android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
                android:value="true" />
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
            <intent-filter>
                <action android:name="FLUTTER_NOTIFICATION_CLICK" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>

    </application>
</manifest>

Pubspec.yaml

name: mttn_app
description: A new Flutter project.

version: 1.0.0+1

environment:
  sdk: ">=2.0.0-dev.68.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter
  
  # AndroidX supported plugins
  share: 0.6.1+1

  firebase_core: 0.4.0+5
  firebase_messaging: 5.0.3
  firebase_database: 3.0.2
  firebase_storage: 3.0.1

  url_launcher: 5.0.3

  flutter_cache_manager: ^0.3.2

  flutter_local_notifications: 0.7.1+3

  background_fetch: 0.2.0

  # Non-AndroidX supported plugins
  flutter_html: 0.10.1+hotfix.1
  http: 0.12.0+2
  cached_network_image: 
  percent_indicator: ^1.0.13
  progress_button: ^0.0.1
  flutter_parallax: ^0.1.2
  flare_flutter: 1.5.1
  dynamic_theme: ^1.0.1


dev_dependencies:
  flutter_test:
    sdk: flutter

flutter:
  uses-material-design: true
  assets:
    - facebook.png
    - instagram.png
    - youtube.png
    - earthlogin.flr
    - freshers.png
    - ic_launcher.png
    - ic_launcher_white.png

  fonts:
    - family: Open Sans
      fonts:
        - asset: assets/fonts/Open_Sans/OpenSans-Regular.ttf
        - asset: assets/fonts/Open_Sans/OpenSans-Italic.ttf
          style: italic

Error in logcat

2019-06-19 17:03:39.431 3846-3846/? E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.mttnapp, PID: 3846
    java.lang.RuntimeException: Unable to instantiate application com.example.mttnapp.com.example.mttnapp.MyApplication: java.lang.ClassNotFoundException: Didn't find class "com.example.mttnapp.com.example.mttnapp.MyApplication" on path: DexPathList[[zip file "/data/app/com.example.mttnapp-g7_cxhQqp5KIjtSVlqzr5g==/base.apk"],nativeLibraryDirectories=[/data/app/com.example.mttnapp-g7_cxhQqp5KIjtSVlqzr5g==/lib/arm64, /data/app/com.example.mttnapp-g7_cxhQqp5KIjtSVlqzr5g==/base.apk!/lib/arm64-v8a, /system/lib64]]
        at android.app.LoadedApk.makeApplication(LoadedApk.java:1095)
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6154)
        at android.app.ActivityThread.access$1300(ActivityThread.java:208)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1785)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:7009)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:537)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
     Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.mttnapp.com.example.mttnapp.MyApplication" on path: DexPathList[[zip file "/data/app/com.example.mttnapp-g7_cxhQqp5KIjtSVlqzr5g==/base.apk"],nativeLibraryDirectories=[/data/app/com.example.mttnapp-g7_cxhQqp5KIjtSVlqzr5g==/lib/arm64, /data/app/com.example.mttnapp-g7_cxhQqp5KIjtSVlqzr5g==/base.apk!/lib/arm64-v8a, /system/lib64]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
        at android.app.AppComponentFactory.instantiateApplication(AppComponentFactory.java:50)
        at androidx.core.app.CoreComponentFactory.instantiateApplication(CoreComponentFactory.java:49)
        at android.app.Instrumentation.newApplication(Instrumentation.java:1124)
        at android.app.LoadedApk.makeApplication(LoadedApk.java:1087)
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6154) 
        at android.app.ActivityThread.access$1300(ActivityThread.java:208) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1785) 
        at android.os.Handler.dispatchMessage(Handler.java:106) 
        at android.os.Looper.loop(Looper.java:193) 
        at android.app.ActivityThread.main(ActivityThread.java:7009) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:537) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) 

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