Android Studio - Gradle sync error on gradle-diagnostics-X.X.X.jar

Question

I've just updated Android Studio and I can't sync my project anymore.

The event log reports:

Gradle sync failed: /Applications/Android Studio.app/Contents/gradle/gradle-X.X.X/lib/plugins/gradle-diagnostics-X.X.X.jar (No such file or directory) 

Answer 1

To solve the Gradle sync error, open gradle-wrapper.properties file and update the Gradle wrapper distribution version from:

distributionUrl=https\://services.gradle.org/distributions/gradle-X.X.X-all.zip 

To:

• Android Studio 3.4 distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip
• Android Studio 2.3 distributionUrl=https\://services.gradle.org/distributions/gradle-2.3-all.zip
• Android Studio 2.2 distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
• Android Studio 2.1 distributionUrl=https\://services.gradle.org/distributions/gradle-2.12-all.zip
• Android Studio 2.0 distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip
• Android Studio 1.5 distributionUrl=https\://services.gradle.org/distributions/gradle-2.8-all.zip
• Android Studio 1.3 distributionUrl=https\://services.gradle.org/distributions/gradle-2.4-all.zip

You can find the latest Gradle wrapper version visiting: https://services.gradle.org/distributions/

EDIT:
As a side note, as @SeBsZ suggests, the official repository of the Android Gradle plugin switched from MavenCentral to jCenter (see Bintray blog post).

Make sure your project build.gradle file contains the new repository and the new classpath:

buildscript {     repositories {         jcenter()     }     dependencies {         classpath 'com.android.tools.build:gradle:2.1.0'     } }  allprojects {     repositories {         jcenter()     } } 

This is not strictly related to the question problem, but since we are already migrating to the new IDE preview it's better to make sure everything is in place.