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`FAILURE: Build failed with an exception.`

* What went wrong:
Could not determine the dependencies of task ':app:compileDebugJavaWithJavac'.
&gt; Failed to install the following SDK components:
      tools Android SDK Tools
      platforms;android-31 Android SDK Platform 31
      build-tools;29.0.2 Android SDK Build-Tools 29.0.2
  Install the missing components using the SDK manager in Android Studio.


* 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 26m 44s
Running Gradle task 'assembleDebug'...
[!] Gradle threw an error while downloading artifacts from the network. Retrying to download...

Have you tried what the message suggests?
``` Install the missing components using the SDK manager in Android Studio.```


if that message comes from CI/CD environments where you only have access via CLI perhaps you could try ssh-ing and try to manually download the missing components.