Could not resolve all dependencies for configuration ':classpath'

Changed proxyPort to 8080 and used jcenter instead of Maven. But Apply expeption to use HTTP instead of HTTPS. This is what has grade.build for build script and allprojects

 buildscript {
repositories {
    jcenter {
        url "http://jcenter.bintray.com/"
    }
  }
}

allprojects {
repositories {
    jcenter {
        url "http://jcenter.bintray.com/"
    }
  }
}

Recently updated Gradle and plugin version and had some problems. It was complaining about plugin com.android.application. Do some digging around and changed

jcenter {
    url "http://jcenter.bintray.com/"
}

to

repositories {
    maven { url 'http://repo1.maven.org/maven2' }
}