title: SpringBoot in IntelliJ. unable to find valid certification path to requested target
body: <p>IntelliJ Community Edition, Java8, Spring Boot 2.1.11</p>
  
  <p>Trying to do a basic linkedIn course (Building Reactive apps with Spring Boot2 by Chris Anatalio)</p>
  
  <p>I am unable to run the application. It uses an embedded Mongo DB. </p>
  
  <pre><code>failed
  :ReactivespringApplication.main()
  org.springframework.beans.BeanInstantiationException: Failed to instantiate [de.flapdoodle.embed.mongo.MongodExecutable]: Factory method 'embeddedMongoServer' threw exception; nested exception is de.flapdoodle.embed.process.exceptions.DistributionException: prepare executable
  de.flapdoodle.embed.process.exceptions.DistributionException: prepare executable
  java.io.IOException: Could not open inputStream for https://downloads.mongodb.org/win32/mongodb-win32-x86_64-3.5.5.zip
  javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
  sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
  sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
  </code></pre>
  
  <p><strong>Update:</strong> </p>
  
  <p>I found that LinkedIn provides an 'end' code set for each lecture. I downloaded and imported it and it ran fine. I dont know what is different. Did a WinMerge but no obvious differences.</p>