خطا در هنگام اجرا شدن gradle

@hesammousavi

از تغییر وی \ی ان رایگان هم استاده نکردم.

Checking Dart SDK version...
Flutter requires PowerShell 5.0 or newer.
See https://flutter.dev/docs/get-started/install/windows for more.
Building flutter tool...
Running pub upgrade...
Running "flutter pub get" in myapp... ۰٫۶s
Launching lib\main.dart on Android SDK built for x86 in debug mode...
Initializing gradle...
Resolving dependencies...

• Error running Gradle:
  ProcessException: Process "C:\myapp\android\gradlew.bat" exited abnormally:

FAILURE: Build failed with an exception.

• What went wrong:
  A problem occurred configuring root project 'android'.

  Could not resolve all artifacts for configuration ':classpath'.
  Could not resolve com.android.tools.build:gradle:3.2.1.
  Required by:
  project :
  Could not resolve com.android.tools.build:gradle:3.2.1.
  Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
  Could not GET 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
  Connect to 127.0.0.1:2020 [/127.0.0.1] failed: Connection refused: connect
  Could not resolve com.android.tools.build:gradle:3.2.1.
  Could not get resource 'https://jcenter.bintray.com/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
  Could not GET 'https://jcenter.bintray.com/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
  Connect to 127.0.0.1:2020 [/127.0.0.1] failed: Connection refused: connect
  Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin:1.2.71.
  Required by:
  project :
  Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin:1.2.71.
  Could not get resource 'https://dl.google.com/dl/android/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.2.71/kotlin-gradle-plugin-1.2.71.pom'.
  Could not GET 'https://dl.google.com/dl/android/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.2.71/kotlin-gradle-plugin-1.2.71.pom'.
  Connect to 127.0.0.1:2020 [/127.0.0.1] failed: Connection refused: connect
  Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin:1.2.71.
  Could not get resource 'https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-gradle-plugin/1.2.71/kotlin-gradle-plugin-1.2.71.pom'.
  Could not GET 'https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-gradle-plugin/1.2.71/kotlin-gradle-plugin-1.2.71.pom'.
  Connect to 127.0.0.1:2020 [/127.0.0.1] failed: Connection refused: connect

• 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 3s
Command: C:\myapp\android\gradlew.bat app:properties

Finished with error: Please review your Gradle project setup in the android/ folder.