Build Unity project with Jenkins failed

Try write from Terminal:

sudo launchctl unload /Library/LaunchDaemons/org.jenkins-ci.plist
sudo mv /Library/LaunchDaemons/org.jenkins-ci.plist /Library/LaunchAgents/org.jenkins-ci.plist

Then log out and log in again.

Now Jenkins will run as agent and can access WindowServer.

Make sure you have -nographics parameter among your startup parameters

I tried

sudo launchctl unload /Library/LaunchDaemons/org.jenkins-ci.plist

sudo mv /Library/LaunchDaemons/org.jenkins-ci.plist /Library/LaunchAgents/org.jenkins-ci.plist

Then Restarted my Mac

And then sudo launchctl load /Library/LaunchAgents/org.jenkins-ci.plist after restarting

It worked