NullPointerException: Cannot invoke "nl.tudelft.labracore.api.dto.StudentGroupDetailsDTO.getMemberUsernames()" because ...

Cannot export full edition due to this error:

Sentry Issue: QUEUE-2J

NullPointerException: Cannot invoke "nl.tudelft.labracore.api.dto.StudentGroupDetailsDTO.getMemberUsernames()" because "this.studentGroup" is null
    at nl.tudelft.queue.dto.view.RequestViewDTO.toColumns(RequestViewDTO.java:161)
    at nl.tudelft.queue.dto.view.requests.LabRequestViewDTO.toColumns(LabRequestViewDTO.java:94)
    at nl.tudelft.queue.csv.CsvHelper.writeCsvValues(CsvHelper.java:74)
    at nl.tudelft.queue.service.LabService.lambda$sessionToCsv$0(LabService.java:159)
    at nl.tudelft.queue.service.FileService.writeTempResource(FileService.java:51)
...
(148 additional frame(s) were not displayed)

A Request (/edition/230/requests/export) raised an exception