OSIS-4095 replace filter with get for unique learning achievement
OSIS-4095 replace filter with get for unique learning achievement

uclouvain/osis,uclouvain/osis,uclouvain/osis,uclouvain/osis,uclouvain/OSIS-Louvain,uclouvain/OSIS-Louvain,uclouvain/OSIS-Louvain