title: Error while building project using maven [com/sun/tools/javac/tree/JCTree$JCCompilationUnit]
body: <p>I am trying to use maven to build my java project, but I always get the error message,</p>
  
  <pre><code>&gt; Execution default of goal org.projectlombok:lombok-maven-plugin:1.18.10.0:delombok failed: A required class was missing while executing org.projectlombok:lombok-maven-plugin:1.18.10.0:delombok: com/sun/tools/javac/tree/JCTree$JCCompilationUnit
  </code></pre>
  
  <p>I used Java8, maven3. Does anyone know how to fix such issue?</p>