[Flutter] Gradle threw an error while downloading artifacts from the network .. Exception:...

I just started with app development with flutter, but am not even able to run the test app. This is what come on console :

Launching lib/main.dart on AOSP on IA Emulator in debug mode... Running Gradle task 'assembleDebug'... Exception in thread "main" java.util.zip.ZipException: error in opening zip file at java.util.zip.ZipFile.open(Native Method) at java.util.zip.ZipFile.(ZipFile.java:225) at java.util.zip.ZipFile.(ZipFile.java:155) at java.util.zip.ZipFile.(ZipFile.java:169) at org.gradle.wrapper.Install.unzip(Install.java:214) at org.gradle.wrapper.Install.access$600(Install.java:27) at org.gradle.wrapper.Install$1.call(Install.java:74) at org.gradle.wrapper.Install$1.call(Install.java:48) at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:65) at org.gradle.wrapper.Install.createDist(Install.java:48) at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:128) at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61) [!] Gradle threw an error while downloading artifacts from the network. Retrying to download...


I have active Internet connection. I also downloaded the gradle 6.4.1 and extracted it in android-studio >> plugins, This what is been shown on gradle-wrapper.properties :

distributionBase=GRADLE_USER_HOME distributionPath=wrapper/dists zipStoreBase=GRADLE_USER_HOME zipStorePath=wrapper/dists distributionUrl=https://services.gradle.org/distributions/gradle-5.6.2-all.zip*


I use Ubuntu 18.04.

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