Met error "You need to provide a value for the Signature Type attribute in abc task (PER-1532697)

Summary:

I'm new to Journeys, I need to create a Journey task to e-signature the document, e.g. "No Harassment Policy".

I used the task "Checklist Templates" and created a "Electronic Signature" type task. When I created the Journey using the newly created template, it always showed the error message "You need to provide a value for the Signature Type attribute in the Sign "No Harassment Policy" task. (PER-1532697)"

I do selected the value " Electronic Signature - Native" for "Signature Type". I have no idea why the error message said I need to provide the value. I'm very confused and blocked there.