google_maps_flutter only works on IOS. I'm having a problem when it comes to Android - flutter

Question

Edit :
We decided to use OpenStreetMap instead of Google Maps. Actually, we were thinking of returning to OpenStreetMap in the future, but we did not want to spoil what was written. We made this decision because the fix would be too costly. Thanks for yours helps.
The project in use will be added to the project to add extra features. After adding maps that work smoothly on IOS, when it comes to Android, I get the error "Unexpected response code 503 for https://clients4.google.com/glm/mmap/api" in the Debug Console section. The full error is below...
what did i check
api key connection
Android Emulator (Creating a different project containing Google Maps. It worked with the android emulator without any problem, but the screen does not appear in the project where I got the error.)
dependencies update
Emulator has google play services
Full Error Code
Unexpected response code 503 for https://clients4.google.com/glm/mmap/api
W/MobStoreFlagStore(26335): java.util.concurrent.ExecutionException: java.lang.SecurityException: GoogleCertificatesRslt: not allowed: pkg=com.dotdotdot.dotdot_dotdot, sha256=[de6158b2bcbe47a9e13cccf90dc960571efc28ca09f89e29840e87729f126466], atk=false, ver=221514037.true (go/gsrlt)
W/MobStoreFlagStore(26335): at agw.s(:com.google.android.gms.dynamite_mapsdynamite#221514081#22.15.14 (150400-0):3)
W/MobStoreFlagStore(26335): at agw.get(:com.google.android.gms.dynamite_mapsdynamite#221514081#22.15.14 (150400-0):2)
W/MobStoreFlagStore(26335): at aig.g(:com.google.android.gms.dynamite_mapsdynamite#221514081#22.15.14 (150400-0):2)
W/MobStoreFlagStore(26335): at wy.c(:com.google.android.gms.dynamite_mapsdynamite#221514081#22.15.14 (150400-0):1)
W/MobStoreFlagStore(26335): at xa.run(:com.google.android.gms.dynamite_mapsdynamite#221514081#22.15.14 (150400-0):0)
W/MobStoreFlagStore(26335): at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:462)
W/MobStoreFlagStore(26335): at java.util.concurrent.FutureTask.run(FutureTask.java:266)
W/MobStoreFlagStore(26335): at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
W/MobStoreFlagStore(26335): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
W/MobStoreFlagStore(26335): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
W/MobStoreFlagStore(26335): at java.lang.Thread.run(Thread.java:923)
W/MobStoreFlagStore(26335): Caused by: java.lang.SecurityException: GoogleCertificatesRslt: not allowed: pkg=com.bilicisoft.visit_ankara, sha256=[de6158b2bcbe47a9e13cccf90dc960571efc28ca09f89e29840e87729f126466], atk=false, ver=221514037.true (go/gsrlt)
W/MobStoreFlagStore(26335): at android.os.Parcel.createExceptionOrNull(Parcel.java:2373)
W/MobStoreFlagStore(26335): at android.os.Parcel.createException(Parcel.java:2357)
W/MobStoreFlagStore(26335): at android.os.Parcel.readException(Parcel.java:2340)
W/MobStoreFlagStore(26335): at android.os.Parcel.readException(Parcel.java:2282)
Error Code ScreenShots
Dependencies
environment:
sdk: ">=2.16.2 <3.0.0"
dependencies:
mobx: ^2.0.1
flutter_mobx: ^2.0.0
mobx_codegen: ^2.0.1+3
build_runner: ^2.0.6
easy_localization: ^3.0.0
shared_preferences: ^2.0.0
dio: ^4.0.0
google_maps_flutter: 2.1.5
Google Maps Code
(I remind you again. This code doesn't work for me on Android, but it does on iOS. I don't think there is a problem with the code.)
Container(
height: 300,
child: googleMap.GoogleMap(
mapType: googleMap.MapType.normal,
initialCameraPosition: googleMap.CameraPosition(
target: googleMap.LatLng(_place?.lat ?? 0, _place?.lng ?? 0),
zoom: 15,
),
onMapCreated: (googleMap.GoogleMapController controller) {
_controller.complete(controller);
},
markers: Set<googleMap.Marker>.of([
googleMap.Marker(
markerId: googleMap.MarkerId(_place?.title ?? ""),
position: googleMap.LatLng(_place?.lat ?? 0, _place?.lng ?? 0))
]),
),
),
AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.dotdot.dot_dot>
<queries>
<intent>
<action android:name="android.intent.action.VIEW" />
<data android:scheme="https" />
</intent>
<intent>
<action android:name="android.intent.action.DIAL" />
<data android:scheme="tel" />
</intent>
<intent>
<action android:name="android.intent.action.SENDTO" />
<data android:scheme="smsto" />
</intent>
</queries>
<application
android:label="APP Name"
android:icon="#mipmap/ic_launcher"
android:usesCleartextTraffic="true">
<activity
android:name=".MainActivity"
android:launchMode="singleTop"
android:theme="#style/LaunchTheme"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
android:hardwareAccelerated="true"
android:windowSoftInputMode="adjustResize">
<meta-data
android:name="io.flutter.embedding.android.NormalTheme"
android:resource="#style/NormalTheme"
/>
android:name="io.flutter.embedding.android.SplashScreenDrawable"
android:resource="#drawable/launch_background"
/>
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<meta-data
android:name="flutterEmbedding"
android:value="2" />
<meta-data android:name="com.google.android.geo.API_KEY"
android:value="AIzaSyC_K9N2..........ASD_s4"/>
</application>
</manifest>

Answer 1

trying out all the above in Summary:
Enabled Android and iOs SDK on Cloud Console
Added Secret Key to Android Manifest
Adding Map on my App
Running the command Flutter clean
check all config google map for android
Uninstall the app from your device (Phone or Emulator) then compile afresh.

Answer 2

Below permissions missing in your androidfestml file check out,
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.dotdot.dot_dot>
//add this one
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<application
android:label="APP Name"
android:icon="#mipmap/ic_launcher"
android:usesCleartextTraffic="true">
//add this too
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />