If that MAC address (8cc8.cd72.3e16) is a client, the messages tell you that the device is roaming to another AP (on another port on the same or other switch).
The MAC Flapping message basically says that your switch sees a MAC address at one port, and suddenly after that at another port. This is expected behavior with Instant APs as the client breaks out at the AP and appears to be moving from port to port while roaming.
Do you have issues as well? Or is it just these messages?
This link seems to have a solution on how to disable the messages on your switches.