Hi,
please note that those are components of OpenVAS 8 which reached their end-of-life a few months ago as announced at http://lists.wald.intevation.org/pipermail/openvas-announce/2018-August/000222.html
It is strongly recommended to plan a migration to the recent GVM-9 (end-of-life, initial release 2017-03-07) - Greenbone Community Edition - Greenbone Community Forum ASAP.
it seems this has been reported as a bug here: