A problem occurred configuring root project 'flutter_app_badger'

[h-assefi]

Hi when I try to use flutter_app_badger I face this issue. how can I solve this ?

Could not resolve all artifacts for configuration ':classpath'.

Could not find gradle.jar (com.android.tools.build:gradle:3.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.5.2/gradle-3.5.2.jar Could not find builder.jar (com.android.tools.build:builder:3.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/build/builder/3.5.2/builder-3.5.2.jar Could not find crash.jar (com.android.tools.analytics-library:crash:26.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/analytics-library/crash/26.5.2/crash-26.5.2.jar Could not find lint-gradle-api.jar (com.android.tools.lint:lint-gradle-api:26.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/lint/lint-gradle-api/26.5.2/lint-gradle-api-26.5.2.jar Could not find gradle-api.jar (com.android.tools.build:gradle-api:3.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle-api/3.5.2/gradle-api-3.5.2.jar Could not find databinding-compiler-common.jar (androidx.databinding:databinding-compiler-common:3.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/androidx/databinding/databinding-compiler-common/3.5.2/databinding-compiler-common-3.5.2.jar Could not find manifest-merger.jar (com.android.tools.build:manifest-merger:26.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/build/manifest-merger/26.5.2/manifest-merger-26.5.2.jar Could not find sdk-common.jar (com.android.tools:sdk-common:26.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/sdk-common/26.5.2/sdk-common-26.5.2.jar Could not find builder-test-api.jar (com.android.tools.build:builder-test-api:3.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/build/builder-test-api/3.5.2/builder-test-api-3.5.2.jar Could not find ddmlib.jar (com.android.tools.ddms:ddmlib:26.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/ddms/ddmlib/26.5.2/ddmlib-26.5.2.jar Could not find tracker.jar (com.android.tools.analytics-library:tracker:26.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/analytics-library/tracker/26.5.2/tracker-26.5.2.jar Could not find sdklib.jar (com.android.tools:sdklib:26.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/sdklib/26.5.2/sdklib-26.5.2.jar Could not find layoutlib-api.jar (com.android.tools.layoutlib:layoutlib-api:26.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/layoutlib/layoutlib-api/26.5.2/layoutlib-api-26.5.2.jar Could not find dvlib.jar (com.android.tools:dvlib:26.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/dvlib/26.5.2/dvlib-26.5.2.jar Could not find repository.jar (com.android.tools:repository:26.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/repository/26.5.2/repository-26.5.2.jar Could not find shared.jar (com.android.tools.analytics-library:shared:26.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/analytics-library/shared/26.5.2/shared-26.5.2.jar Could not find common.jar (com.android.tools:common:26.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/common/26.5.2/common-26.5.2.jar Could not find protos.jar (com.android.tools.analytics-library:protos:26.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/analytics-library/protos/26.5.2/protos-26.5.2.jar Could not find builder-model.jar (com.android.tools.build:builder-model:3.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/build/builder-model/3.5.2/builder-model-3.5.2.jar Could not find apkzlib.jar (com.android.tools.build:apkzlib:3.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/build/apkzlib/3.5.2/apkzlib-3.5.2.jar Could not find apksig.jar (com.android.tools.build:apksig:3.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/build/apksig/3.5.2/apksig-3.5.2.jar Could not find annotations.jar (com.android.tools:annotations:26.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/tools/annotations/26.5.2/annotations-26.5.2.jar Could not find databinding-common.jar (androidx.databinding:databinding-common:3.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/androidx/databinding/databinding-common/3.5.2/databinding-common-3.5.2.jar Could not find baseLibrary.jar (com.android.databinding:baseLibrary:3.5.2). Searched in the following locations: https://dl.google.com/dl/android/maven2/com/android/databinding/baseLibrary/3.5.2/baseLibrary-3.5.2.jar