The MGMT interface is Mandator for ClearPass. I see no gateway is assigned to the MGMT interface.
If you prefer to use one interface, then you should configure MGMT interface with the IP 10.26.60.13/27, otherwise configure the MGMT with a valid IP and gateway and then check the status of DATA interface config.
Please update the ip address from the console or SSH.
#configure ip <mgmt|data> <ipaddress> netmask <netmask address> gateway <gateway address>