Cannot start a scan task with task wizard: Failed to find port_list ‘33d0cd82-57c6-11e1-8ed1-406186ea4fc5‘

Could you try deleting the /var/lib/gvm/data-objects/gvmd directory and re-running a GVMD_DATA sync (should be sudo -u _gvm greenbone-feed-sync --type GVMD_DATA)?