Just found NPE on preprod : https://app.datadoghq.com/logs?cols=core_host%2Ccore_service&event=AQAAAXR8PU1CzxoUfAAAAABBWFI4UFZKNVA2c01GVDlicllBSw&from_ts=1599809635196&index=&live=true&messageDisplay=inline&query=host%3A%2A%5C-preprod%2A++source%3Anuxeo&saved_view=14580&stream_sort=desc&to_ts=1599813235196
PR for 3.34-maintenance: #702
PR for master: #701