When I saw some tutorial videos, if an error occurs, UiPath will popup an error message box similar to the one below (including error message and exception type).
Hello @111145
If you run the process within try catch it will not throw an error as pop, it just writes the exception in the output message which catch the error and write its as a log message.
Note: in catch, we need to provide a log message as exception.message
For example, I am watching a tutorial about exception handing, the tutorial show this error message box:
but mine only show the same message in the output panel like this: