Kong-ingress-controller pod fails to start (wait-for-migrations)

My kong pod and kong-ingress-controller pod are failing to start.

Both were running fine before but stopped this morning.
postgres-0 pod is running (3 days old)
kong-migrations pod is running (Terminated: Completed 3 days ago)

The last event for these 2 failing pods (kong & kong-ingress-controller) shows :
Message : Back-off restarting failed container
Source : kubelet omfkubernetes02
Sub-object : spec.initContainers{wait-for-migrations}

Why are they stuck waiting for migrations that have completed and how do I resolve this ?

Could you share the logs of the failed containers?