Could not resolve dependency org.jacoco:org.jacco

Hello,

I tried to setup jacoco using gradlew 4.6 behind a proxy.

When I try to use jacoco I get
* What went wrong:
A problem occurred configuring root project ‘XXXX.
> Could not resolve all dependencies for configuration ‘:classpath’.
> Could not determine artifacts for org.jacoco:org.jacoco.build:0.8.1
> Could not get resource https://plugins.gradle.org/m2/org/jacoco/org.jacoco.build/0.8.1/org.jacoco.build-0.8.1.jar’.
> Could not HEAD ‘https://plugins.gradle.org/m2/org/jacoco/org.jacoco.build/0.8.1/org.jacoco.build-0.8.1.jar’.
> sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

* 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 7s

My configuration is

buildscript {

    repositories {

        maven {

            url "https://plugins.gradle.org/m2/"
            url "http://repo1.maven.org/maven2/"

        }

                                       mavenCentral()

        jcenter()

       

    }

    dependencies { classpath "org.sonarsource.scanner.gradle:sonarqube-gradle-plugin:2.6.2"             

                classpath 'org.jacoco:org.jacoco.core:0.8.1'

                classpath 'org.jacoco:org.jacoco.ant:0.8.1'

                classpath 'org.jacoco:org.jacoco.build:0.8.1'     

                }

}

               

 

apply plugin: 'java'

apply plugin: 'eclipse'

apply plugin: 'org.sonarqube'

apply plugin: 'jacoco'

Any idea?