I downloaded `jhipster` registry version 4.0.0, imported and run the registry successfully, when I open `localhost:8761` I am getting request cannot be proceed error, there is no error information also. 

When I used command mvnw I am getting an 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.` [![screenshot of the error](https://i.stack.imgur.com/U55pT.png)](https://i.stack.imgur.com/U55pT.png)