- Open the "Application Settings" dialog in UGENE.
- Add a custom tool that is a python script (see e.g. the attached *.xml-config and *.py-script).
- Remove a path to python tool in the "Supported tools" section.
- Create a workflow with the added custom tool and run it.
the workflow is launched and is finished with an error status, but without an error message. There is a message in the log like this:
the workflow didn't pass the validation.