Errors in tests when starting docker image in container more than twice, in rancher

hi i’m getting this error when starting my katalon docker image more than two times in rancher

[TEST_CASE][ERROR] - Test Cases/test: Test Cases/tes has ERROR(s) because (of) org.codehaus.groovy.runtime.InvokerInvocationException: java.awt.AWTError: Can’t connect to X11 window server using ‘:99’ as the value of the DISPLAY variable

!MESSAGE The workspace exited with unsaved changes in the previous session; refreshing workspace to recover changes.

get this message is console log also