SOLVED based on https://github.com/maths/moodle-qtype_stack/issues/668#issuecomment-751475762 .
Prt1's Score value that must be set to 1.
SOLVED based on https://github.com/maths/moodle-qtype_stack/issues/668#issuecomment-751475762 .
Prt1's Score value that must be set to 1.