this is your second jenkins related post.
Did you configure a custom log recorder in Jenkins as proposed here ?
To see what’s going on in Jenkins you should create a custom Jenkins Sonarqube logger
(/manage/log/new) with configuration logger hudson.plugins.sonar and org.sonarsource .
And do you use the Sonarqube scan in parallel step ?
Because we had intermittent timeouts when trying to speed up our npm builds via running 1-n Sonarqube scans in parallel.