I can't build my first empty project with android studio

Question

recentely i have installed android studio but i can't build an empty project! where is the problem?!!
find bellow the Sync issue details

 Unable to resolve dependency for ':app@debugAndroidTest/compileClasspath': Could not resolve com.android.support.test:runner:1.0.1. Could not resolve com.android.support.test:runner:1.0.1. Required by: project :app > Could not resolve com.android.support.test:runner:1.0.1. > Could not get resource 'https://dl.google.com/dl/android/maven2/com/android/support/test/runner/1.0.1/runner-1.0.1.pom'. > Could not GET 'https://dl.google.com/dl/android/maven2/com/android/support/test/runner/1.0.1/runner-1.0.1.pom'. > sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target > PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target > unable to find valid certification path to requested target 

Answer 1

you can try to remove all test file in gradle.build (app) inside dependencies, it looks like this

testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'

the problem maybe because of your internet connection and make it can't download the file.