If a namespace deletion event gets triggered before kuryrnetwork handler started handling the kuryrnetwork CRD status population, kuryr will only trigger the last update on the kuryrnetwork CRD object and will only execute the on_finalize event. Right now that method expect the status field to be there and makes the kuryr-controller crash, leaving the namespace deletion blocked since the kuryrnetwork CRD cannot get the finalizer removed
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (OpenShift Container Platform 4.6 GA Images), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2020:4196