title: Failed to read artifact descriptor for org.jacoco:jacoco-maven-plugin:jar:0.7.9
body: <p>I am trying to install and run GrammarViz2 in Ubuntu 18.04 on Oracle virtual machine according to the instruction on <a href="https://github.com/GrammarViz2/grammarviz2_src" rel="nofollow noreferrer">https://github.com/GrammarViz2/grammarviz2_src</a>. It requires me to install Java and Maven. I have installed them successfully, but when run</p>
  
  <pre><code>$mvn package -PSingle
  </code></pre>
  
  <p>I get the following error. Can any one help me to fix this problem?
  Thank you in advance.</p>
  
  <pre><code>[INFO] Building GrammarViz2 0.0.1-SNAPSHOT
  [INFO] --------------------------------[ jar ]---------------------------------
  Downloading from central: https://repo.maven.apache.org/maven2/org/jacoco/jacoco-maven-plugin/0.7.9/jacoco-maven-plugin-0.7.9.pom
  [INFO] ------------------------------------------------------------------------
  [INFO] BUILD FAILURE
  [INFO] ------------------------------------------------------------------------
  [INFO] Total time:  2.637 s
  [INFO] Finished at: 2020-04-16T14:13:57-04:00
  [INFO] ------------------------------------------------------------------------
  [ERROR] Plugin org.jacoco:jacoco-maven-plugin:0.7.9 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.jacoco:jacoco-maven-plugin:jar:0.7.9: Could not transfer artifact org.jacoco:jacoco-maven-plugin:pom:0.7.9 from/to central (https://repo.maven.apache.org/maven2): Transfer failed for https://repo.maven.apache.org/maven2/org/jacoco/jacoco-maven-plugin/0.7.9/jacoco-maven-plugin-0.7.9.pom: Received fatal alert: protocol_version -&gt; [Help 1]
  [ERROR] 
  </code></pre>