谁在研究Flutter,帮看看下面的错误
Launching lib\main.dart on Android SDK built for x86 64 in debug mode...
Initializing gradle...
Resolving dependencies...
* Error running Gradle:
ProcessException: Process "D:\workspace-an\flutter_ap\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://maven.aliyun.com/repository/google/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
> Could not GET 'https://maven.aliyun.com/repository/google/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
> Connect to mirrors.dormforce.net:80 [mirrors.dormforce.net/202.115.22.208] failed: Connection timed out: connect
> Could not resolve com.android.tools.build:gradle:3.2.1.
> Could not get resource 'https://maven.aliyun.com/repository/jcenter/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
> Could not GET 'https://maven.aliyun.com/repository/jcenter/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
> Connect to mirrors.dormforce.net:80 [mirrors.dormforce.net/202.115.22.208] failed: Connection timed out: connect
> Could not resolve com.android.tools.build:gradle:3.2.1.
> Could not get resource 'http://maven.aliyun.com/nexus/content/groups/public/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
> Could not GET 'http://maven.aliyun.com/nexus/content/groups/public/com/android/tools/build/gradle/3.2.1/gradle-3.2.1.pom'.
> Connect to mirrors.dormforce.net:80 [mirrors.dormforce.net/202.115.22.208] failed: Connection timed out: 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 1m 6s
Command: D:\workspace-an\flutter_ap\android\gradlew.bat app:properties
Finished with error: Please review your Gradle project setup in the android/ folder.