Encountering Course Data Retrieval Issue during Koa to Palm Version Upgrade in Studio

I’m currently upgrading from Koa to the Palm version, and I’ve encountered an issue in the studio. Specifically, I’m unable to retrieve course data due to a problem with… org == None

def _accessible_courses_summary_iter(request, org=None):
   ........................
   ........................
    if org is not None:
        courses_summary = [] if org == '' else CourseOverview.get_all_courses(orgs=[org])
    else:
        courses_summary = modulestore().get_course_summaries()

Kindly advise on resolving this issue.