Issues trying to run Katalon tests via Jenkins on Ubuntu

Hi
I’m learning how to run my Katalon tests using Jenkins.
I followed tutorials and while it is working fine on Windows I have some issues when my Jenkins is on Ubuntu.
The builds are marked as Success yet the tests are not even being started. I use sample katalon project ( the same on Windows and LInux)
Console logs below

Started by user admin
Running as SYSTEM
Building in workspace /var/lib/jenkins/workspace/katalonTest
No credentials specified

git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
git config remote.origin.url https://github.com/katalon-studio-samples/ci-samples # timeout=10
Fetching upstream changes from https://github.com/katalon-studio-samples/ci-samples
git --version # timeout=10
git fetch --tags --progress – https://github.com/katalon-studio-samples/ci-samples +refs/heads/:refs/remotes/origin/ # timeout=10
git rev-parse refs/remotes/origin/master^{commit} # timeout=10
git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10
Checking out Revision 99c24b35308b9c364e4eeeb49df901ea464c29be (refs/remotes/origin/master)
git config core.sparsecheckout # timeout=10
git checkout -f 99c24b35308b9c364e4eeeb49df901ea464c29be # timeout=10
Commit message: “Merge pull request #22 from CastelloGovender/patch-1”
git rev-list --no-walk 99c24b35308b9c364e4eeeb49df901ea464c29be # timeout=10
[2020-02-08T17:32:00.382434] Using Katalon Studio at /var/lib/jenkins/Katalon_Studio_Linux_64-6.3.3
[2020-02-08T17:32:00.382503] Making driver executables…
[2020-02-08T17:32:00.382515] Drivers folder at: /var/lib/jenkins/Katalon_Studio_Linux_64-6.3.3/configuration/resources/drivers
[2020-02-08T17:32:00.382688] Set geckodriver as executable !
[2020-02-08T17:32:00.382760] Set chromedriver as executable !
[2020-02-08T17:32:00.383691] Execute [sh, -c, xvfb-run -a -n 0 -s “-screen 0 1024x768x24” /var/lib/jenkins/Katalon_Studio_Linux_64-6.3.3/katalon -projectPath="/var/lib/jenkins/workspace/katalonTest" -noSplash -runMode=console -retry=0 -testSuitePath=“Test Suites/TS_RegressionTest” -browserType=“Chrome (headless)” ] in /tmp/katalon-11285401092792161827
Finished: SUCCESS

Any idea what may be the reason ?