No crash without a browser (fixes #2249)
No crash without a browser (fixes #2249)

tsiegleauq/OpenSlides,normanjaeckel/OpenSlides,jwinzer/OpenSlides,jwinzer/OpenSlides,tsiegleauq/OpenSlides,normanjaeckel/OpenSlides,CatoTH/OpenSlides,CatoTH/OpenSlides,OpenSlides/OpenSlides,CatoTH/OpenSlides,ostcar/OpenSlides,normanjaeckel/OpenSlides,jwinzer/OpenSlides,emanuelschuetze/OpenSlides,FinnStutzenstein/OpenSlides,jwinzer/OpenSlides,emanuelschuetze/OpenSlides,CatoTH/OpenSlides,FinnStutzenstein/OpenSlides,normanjaeckel/OpenSlides,boehlke/OpenSlides,jwinzer/OpenSlides,boehlke/OpenSlides,FinnStutzenstein/OpenSlides,ostcar/OpenSlides,boehlke/OpenSlides,ostcar/OpenSlides,emanuelschuetze/OpenSlides,emanuelschuetze/OpenSlides,OpenSlides/OpenSlides,FinnStutzenstein/OpenSlides,boehlke/OpenSlides,tsiegleauq/OpenSlides