!SESSION 2022-03-23 13:28:20.132 -----------------------------------------------
eclipse.buildId=unknown
java.version=11.0.14.1
java.vendor=Eclipse Adoptium
You should use Java8 to run Katalon Runtime Engine.
Unable to init server: Could not connect: Connection refused
Katalonc: Cannot open display:
The error shows that the machine is missing Xvfb that requires to run KRE on Linux.
You can try with windows-latest machine. Please refer to this example: