message: Fix code kata clean up
diff: @@ -109,7 +109,7 @@ export class CourseController {
  course.lectures.forEach((lecture) => {
  lecture.units.forEach((unit) => {
  - if (unit.type === 'code-kata' && currentUser.role === 'student') {
  + if (unit.__t === 'code-kata' && currentUser.role === 'student') {
  (<ICodeKataUnit>unit).code = null;
  }
  });
  