title: Building multi-module maven project for SonarCloud
body: <p>I am building a maven project of X amount of modules for the first time for SonarCloud. The <code>sonar.projectKey</code> value needs to be unique, so I set it to <code>${project.groupId}:{$project.artifactId}</code>, so that it would be generated per module. Afterwards, run the CI and this is the response message:</p>
  <pre><code>[ERROR] Failed to execute goal org.sonarsource.scanner.maven:sonar-maven-plugin:3.7.0.1746:sonar (default-cli) on project ${project.groupId}:${project.artifactId}: Could not find a default branch to fall back on. -&gt; [Help 1]
  </code></pre>
  <p>I suspect this is because I had not created a project with that key on my &quot;organization&quot;, but the issue is that I have more than one module. In fact, I have X of them. Should I still create a project <strong>per module</strong> that I want scanned? Shouldn't the sonarqube plugin handle that?</p>