title: Error Could not initialize class org.codehaus.groovy.runtime.InvokerHelper
body: <p>So i download some challenge edutools and after i run the challenge , i get error , i was install jdk java, sdk java, kotlin sdk , and gradle  why i can get error  i use , java jdk version</p>
  <blockquote>
  <p>openjdk version &quot;13.0.2&quot; 2020-01-14</p>
  <p>OpenJDK Runtime Environment (build 13.0.2+8)</p>
  <p>OpenJDK 64-Bit Server VM (build 13.0.2+8, mixed mode, sharing)</p>
  </blockquote>
  <p>and i use gradle version 6.2.2</p>
  <blockquote>
  <p>Gradle 6.2.2</p>
  </blockquote>
  <p>and this is full output of my gradle version</p>
  <p><a href="https://i.stack.imgur.com/xNQEV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xNQEV.png" alt="gradle-version" /></a></p>
  <p>and this is my full output of error on my intelejit idea</p>
  <pre><code>FAILURE: Build failed with an exception.
  
  * What went wrong:
  Could not initialize class org.codehaus.groovy.runtime.InvokerHelper
  
  * Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
  
  * Get more help at https://help.gradle.org
  
  BUILD FAILED in 1s
  </code></pre>