title: Spring Boot uber JAR: cannot be resolved to absolute file path because it does not reside in the file system
body: <p>I got following error after export Spring Boot version 1.5.7.RELEASE to runnable JAR. I don't use maven because security reasons, and I added all JARs in build path.</p>
  
  <p>I run below command</p>
  
  <pre><code>java -jar mailer.jar
  </code></pre>
  
  <p>then I received error as you see in screenshot</p>
  
  <p><a href="https://i.stack.imgur.com/yBH2a.png" rel="noreferrer"><img src="https://i.stack.imgur.com/yBH2a.png" alt="enter image description here"></a></p>