React-native unable to run-android : <p>Following this: <a href="https://facebook.github.io/react-native/docs/getting-started.html" rel="noreferrer">https://facebook.github.io/react-native/docs/getting-started.html</a> ,
I've created an empty project and am trying to run it by doing:
sudo react-native run-android
This is what is produced:</p>

<pre><code>Starting JS server...
Building and installing the app on the device (cd android &amp;&amp; ./gradlew installDebug...
Downloading https://services.gradle.org/distributions/gradle-2.4-all.zip

Exception in thread "main" javax.net.ssl.SSLHandshakeException: 

sun.security.validator.ValidatorException: PKIX path building failed: 

sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
</code></pre>

<p>(I can post the rest of the error if that would be useful). Does anyone have any advice?</p>
