Artemis Import from Sharing: Cannot invoke \"java.util.zip.ZipEntry.isDirectory()\" because \"currentEntry\" is null

Beim Import von https://sharing.codeability-austria.uibk.ac.at/sharing/permission_tests/export-test-by-michael aus der Sharing Platform in Artemis: Unter https://artemis.codeability-austria.uibk.ac.at/course-management/34/programming-exercises/importSharing

{"type":"https://www.jhipster.tech/problem/problem-with-message","title":"Internal Server Error","status":500,"detail":"Cannot invoke \"java.util.zip.ZipEntry.isDirectory()\" because \"currentEntry\" is null","path":"/api/sharingImport/basket/exercise/0/problemStatement","message":"error.http.500"}