Google play console gives security alert - Vulnerable - google-play-console

Google play console gives security alert - Vulnerable
Can anyone have idea why is it giving security alert
Here are the builld.gradle file the library which Iā€™m using in app.
compileSdkVersion 28
defaultConfig {
applicationId ā€œ************ā€
minSdkVersion 16
targetSdkVersion 28
versionCode 126
versionName "2.14.3"
multiDexEnabled true
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
// resConfigs "en" // Commented because need to support MultiLanguage
ndk.abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
}
api 'androidx.legacy:legacy-support-v4:1.0.0-beta01'
api 'androidx.appcompat:appcompat:1.0.0-beta01'
api 'com.google.android.material:material:1.0.0-beta01'
api 'androidx.cardview:cardview:1.0.0-beta01'
api 'androidx.recyclerview:recyclerview:1.0.0-beta01'
api 'com.google.android.gms:play-services-maps:17.0.0'
api 'com.google.android.gms:play-services-places:17.0.0'
api 'com.google.android.libraries.places:places:2.1.0'
api 'com.google.android.gms:play-services-auth:17.0.0'
api 'androidx.multidex:multidex:2.0.1'
api 'com.google.firebase:firebase-core:17.2.1'
api 'com.google.firebase:firebase-messaging:20.0.1'
api 'com.google.firebase:firebase-auth:19.2.0'
api 'com.google.firebase:firebase-config:19.0.3'
api 'com.google.android.play:core:1.5.0'
Alert Play Console is showing
Vulnerable locations:
**.**.*********.****.SliderImage.YouTubeVideo->onActivityResult
**.**.*********.****.SliderImage.YouTubeVideo->onCreate
**.**.*********.****.LocationAndContactActivity->setupAutocompleteFragment
**.**.*********.****.LocateOnGoogleMapActivity->setupAutocompleteFragment
**.**.*********.****.MediaDetailsActivity$13$1$1->run
**.**.*********.****.MediaDetailsActivity$6->onClick
**.**.*********.****.MediaDetailsActivity->assignYoutubeThumbnail
**.**.*********.****.adapter.MediaAdapter$3->onClick
**.**.*********.****.adapter.MediaAdapter->onBindViewHolder
**.**.*********.****.CustomPages_Adapter$4->onClick
**.**.*********.****.CustomPages_Adapter->onBindViewHolder
**.**.*********.****.adapter.CustomPagesAdapter$4->onClick
**.**.*********.****.adapter.CustomPagesAdapter->onBindViewHolder
**.**.*********.****.ProductDetailsActivity$11->onClick
**.**.*********.****.ProductDetailsActivity$26$1$1->run
**.**.*********.****.ProductDetailsActivity->onCreate
**.**.*********.****.WebPostDetailActivity->setupAutocompleteFragment
**.**.*********.****.adapter.WebPostAdapter$4->onClick
**.**.*********.****.adapter.WebPostAdapter->onBindViewHolder
**.**.*********.****.FourthStageActivity->setupAutocompleteFragment

This happens usually when your API keys are exposed which means you are using API keys directly into application code. so anyone can just extract your apk and get the API keys easily and exhaust your usage quotas.
FIX
There are several methods to hide your API keys. one of the best method is storing it in external server and retrieving it.
You may also use other methods too from the link below,
Methods with explanations
Restricting API keys
Encryption methods

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