message: Create whitelist array on course object if it is missing
diff: @@ -60,6 +60,9 @@ export class FixtureLoader {
  course.students = await FixtureUtils.getRandomStudents(2, 10, hash);
  // enroll random array of WhitelistUsers
  const randomWhitelistUser = await FixtureUtils.getRandomWhitelistUsers(course.students, course, hash);
  + if (!course.hasOwnProperty('whitelist')) {
  + course.whitelist = [];
  + }
  await Promise.all(randomWhitelistUser.map(async (whitelistUser) => {
  course.whitelist.push(await WhitelistUser.create(whitelistUser));
  }));
  