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I have this error when I built flutter project :

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:3.5.0. Required by: project : > Could not resolve com.android.tools.build:gradle:3.5.0. > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.5.0/gradle-3.5.0.pom'. > Could not GET 'https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.5.0/gradle-3.5.0.pom'. > YOUR_HOST > Could not resolve com.android.tools.build:gradle:3.5.0. > Could not get resource 'https://jcenter.bintray.com/com/android/tools/build/gradle/3.5.0/gradle-3.5.0.pom'. > Could not GET 'https://jcenter.bintray.com/com/android/tools/build/gradle/3.5.0/gradle-3.5.0.pom'. > YOUR_HOST > Could not resolve com.android.tools.build:gradle:3.5.0. > Could not get resource 'https://repo.maven.apache.org/maven2/com/android/tools/build/gradle/3.5.0/gradle-3.5.0.pom'. > Could not GET 'https://repo.maven.apache.org/maven2/com/android/tools/build/gradle/3.5.0/gradle-3.5.0.pom'. > YOUR_HOST Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.50. Required by: project : > Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.50. > Could not get resource 'https://dl.google.com/dl/android/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.3.50/kotlin-gradle-plugin-1.3.50.pom'. > Could not GET 'https://dl.google.com/dl/android/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.3.50/kotlin-gradle-plugin-1.3.50.pom'. > YOUR_HOST > Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.50. > Could not get resource 'https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-gradle-plugin/1.3.50/kotlin-gradle-plugin-1.3.50.pom'. > Could not GET 'https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-gradle-plugin/1.3.50/kotlin-gradle-plugin-1.3.50.pom'. > YOUR_HOST > Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.50. > Could not get resource 'https://repo.maven.apache.org/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.3.50/kotlin-gradle-plugin-1.3.50.pom'. > Could not GET 'https://repo.maven.apache.org/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.3.50/kotlin-gradle-plugin-1.3.50.pom'. > YOUR_HOST

  • 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

BULD FAILED in 3s

Exception: Gradle task assembly debug failed with exit code 1

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    check your internet connection Commented Dec 24, 2020 at 10:31

2 Answers 2

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This kind of issue usually appears either due to a gradle misconfig or in your case, it looks more of an internet issue.

Try running flutter clean in your project source and then using flutter build appbundle and check whether you're able to run the command without any errors.

In case, you're still facing any errors, go to android/build.gradle in your flutter project and edit this line

from classpath 'com.android.tools.build:gradle:3.5.0'

to classpath 'com.android.tools.build:gradle:3.4.2

Then repeat the above steps again with flutter clean and flutter build appbundle. It should work.

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1

run Flutter upgrade first

flutter upgrade

then run flutter clean

flutter clean
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