Could not resolve com.google.firebase:firebase-iid:[20.0.2]

[shirsh94]

Hello,
I just got this issue in my flutter project.
i am unable to find out solution regarding this...

FAILURE: Build failed with an exception.

• What went wrong:
  Could not determine the dependencies of task ':app:processStagingDebugResources'.

Could not resolve all task dependencies for configuration ':app:stagingDebugRuntimeClasspath'.
Could not resolve com.google.firebase:firebase-iid:[20.0.2].
Required by:
project :app > com.google.firebase:firebase-messaging:20.1.0
> Failed to list versions for com.google.firebase:firebase-iid.
> Unable to load Maven meta-data from https://google.bintray.com/exoplayer/com/google/firebase/firebase-iid/maven-metadata.xml.
> Could not get resource 'https://google.bintray.com/exoplayer/com/google/firebase/firebase-iid/maven-metadata.xml'.
> Could not GET 'https://google.bintray.com/exoplayer/com/google/firebase/firebase-iid/maven-metadata.xml'. Received status code 502 from server: Bad Gateway

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 10m 15s
[!] Gradle threw an error while downloading artifacts from the network. Retrying to download...

---

its my pubspec.yaml file.

name: my_project_name
description: A new Flutter project.
version: 1.0.0+14

environment:
sdk: ">=2.2.2 <3.0.0"

dependencies:
flutter:
sdk: flutter
flutter_localizations:
sdk: flutter

draggable_scrollbar: ^0.0.4
firebase_auth: ^0.15.3
firebase_messaging: ^6.0.9
cloud_firestore: ^0.12.9+5
carousel_slider: ^1.3.0
flutter_facebook_login: ^3.0.0
dotted_border: ^2.0.0+1
share: ^0.6.3+1
page_indicator: ^0.3.0
webview_flutter: ^0.3.15+1
shared_preferences: ^0.5.4+6
expandable: ^5.0.1
image_picker: ^0.6.1+11
flutter_rating_bar: ^3.0.0
esys_flutter_share: ^1.0.2
firebase_storage: ^3.0.6
image_cropper: ^1.1.2
cached_network_image: ^2.0.0
apple_sign_in: ^0.1.0
intl: ^0.17.0
firebase_dynamic_links: ^0.5.0+9
flutter_email_sender: ^2.2.2
fluttertoast: ^3.1.3
http: ^0.12.2
url_launcher: ^5.5.0
firebase_remote_config: ^0.3.0+1
google_maps_flutter: ^0.5.11
flutter_local_notifications: ^1.1.3
firebase_crashlytics: ^0.1.2+4
connectivity_widget: ^0.1.7
provider: ^4.0.1
firebase_analytics: ^5.0.11
flare_flutter: ^2.0.3
percent_indicator: ^2.1.5
table_calendar: ^2.2.3
device_calendar: ^3.1.0
flutter_styled_toast: ^1.3.2
animations: ^1.1.2
flutter_svg: ^0.22.0
package_info: ^0.4.3+4
stacked: ^1.9.5
permission_handler: ^5.1.0+2
geocoding: ^1.0.5
geolocator: ^6.2.1
google_place: ^0.3.3
confetti: ^0.6.0

dev_dependencies:
flutter_test:
sdk: flutter

flutter:
uses-material-design: true

assets:
- assets/images/
- assets/images/onboarding/
- assets/images/home/
- assets/images/profile/

fonts:
- family: SourceSansPro
fonts:
- asset: assets/fonts/SourceSansPro-Bold.ttf
- asset: assets/fonts/SourceSansPro-Light.ttf
- asset: assets/fonts/SourceSansPro-Regular.ttf
- asset: assets/fonts/SourceSansPro-SemiBold.ttf
- family: Poppins
fonts:
- asset: assets/fonts/Poppins-Regular.ttf
- family: CustomIcon
fonts:
- asset: assets/fonts/CustomIcon.ttf
flutter_intl:
enabled: true

---

its my app/build.gradle file.

def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
localPropertiesFile.withReader('UTF-8') { reader ->
localProperties.load(reader)
}
}

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
flutterVersionCode = '11'
}

def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
flutterVersionName = '1.0'
}

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
apply plugin: 'com.google.firebase.firebase-perf'

android {
compileSdkVersion 30

sourceSets {
    main.java.srcDirs += 'src/main/kotlin'
}

lintOptions {
    disable 'InvalidPackage'
}

defaultConfig {
    // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
    applicationId "com.something.myprojectname"
    minSdkVersion 21
    targetSdkVersion 30
    versionCode 18
    versionName '1.0.0'
    testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    multiDexEnabled true
}

signingConfigs {
    release {
        storeFile file('myprojectname.jks')
        storePassword '123456'
        keyAlias 'myProjectName'
        keyPassword '123456'
    }
    debug {
        storeFile file('myprojectname.jks')
        storePassword '123456'
        keyAlias 'myProjectName'
        keyPassword '123456'
    }
}

buildTypes {
    release {
        // TODO: Add your own signing config for the release build.
        // Signing with the debug keys for now, so `flutter run --release` works.
        signingConfig signingConfigs.release
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
     debug {
        signingConfig signingConfigs.debug
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}

flavorDimensions "default"
productFlavors {
    staging {
        dimension "default"
        manifestPlaceholders.google_maps_key = "AIz..........................................."
        resValue "string", "app_name", "myProjectNameStaging"
    }
    production {
        dimension "default"
        manifestPlaceholders.google_maps_key = "AIz..........................................."
        resValue "string", "app_name", "myProjectName"
    }
}

}

flutter {
source '../..'
}

dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'com.google.firebase:firebase-messaging:20.1.0'
implementation 'com.google.firebase:firebase-perf:19.0.5'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.1.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0'
implementation 'com.google.firebase:firebase-inappmessaging-display:19.0.4'
implementation 'com.google.firebase:firebase-analytics:17.3.0'

}

apply plugin: 'io.fabric'
apply plugin: 'com.google.gms.google-services'