<kanban default_group_by="task">

This task field is related field in hr.employee table. Did it is possible or not?

assert groupby_def and groupby_def._classic_write, "Fields in 'groupby' must be regular database-persisted fields (no function or related fields), or function fields with store=True"

AssertionError: Fields in 'groupby' must be regular database-persisted fields (no function or related fields), or function fields with store=True