ArrayIndexOutOfBoundsException with incorrect CSV input

Sentry Issue: QUEUE-1P

ArrayIndexOutOfBoundsException: 1
    at nl.tudelft.ewi.queue.helper.CsvUserHelper.readCsv(CsvUserHelper.java:59)
    at nl.tudelft.ewi.queue.service.CourseService.addCourseStaff(CourseService.java:97)
    at nl.tudelft.ewi.queue.controller.CourseController.importParticipants(CourseController.java:283)
...
(150 additional frame(s) were not displayed)

1