A clоud service prоvider uses NFV tо dynаmicаlly deploy virtuаl firewalls, load balancers, and intrusion detection systems (IDS) as needed. One day, a customer complains that after scaling out their web service, incoming traffic is no longer balanced properly across their web servers. Upon investigation, you notice that the virtual load balancer (VNF) is active, but new flow entries are not appearing in its configuration, and CPU usage on the NFV infrastructure is very high. What is the most likely cause of the issue?