I guess, a keyword threw an exception but the exception did not bubble up to the caller Test Case. The exception was intercepted by someone (a part of Katalon) in the middle. So your Test Case could not see the exception.
Please check Project Settings > Test Design > Test Case
Here you will find an option "Default Failure Handling for Test Step "
- STOP_ON_FAILURE
- CONTINUE_ONF_FAILURE
- OPTIONAL
Which value do you have in your project?
