Hi Tsubasa,
As the error message says, you need to supply a person id in that last parameter of the server action. There is nothing set in this last parameter of your server action call yet.
The reason Outsystems gives you this error is that this input parameter has been defined as mandatory on the server action. Which is a good thing, since you really need it in order to add a valid PersonMovieRole record in the database ! (point f on page 5)
As part of your form, you probably added an element so the user can enter the person (probably a combo box where the user can select a person). And as you point out with the arrow on the right, this person is not passed into the server action yet.
So enter PersonMovieRoleForm.Record.PersonId there, it should be available as an option in the dropdown, but if not you can go to the expression editor and add it.
happy coding,
Dorine