FAILURE：构建失败并出现异常。 任务“：app：mergeDebugResources”执行失败

Question

Android Studio is showing this error. Can't find out what's causing the error.

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:mergeDebugResources'.
> Could not resolve all files for configuration ':app:_internal_aapt2_binary'.
   > Could not download aapt2-windows.jar (com.android.tools.build:aapt2:3.6.2-6040484): No cached version available for offline mode

* 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

Answer 1

The problem is with downloading dependency: Could not download aapt2-windows.jar (com.android.tools.build:aapt2:3.6.2-6040484): No cached version available for offline mode . It means that the dependency can't be downloaded because you're in offline mode or you don't have an Internet connection. Try to turn Gradle's offline mode off, check the Internet connection and try to build again.