sfp-sfpplus LOSS PACKET TRAFFIC GRAFFIC

I have a router CCR2116-12G-4S+ , and its sfpplus4 traffic grafic have packet loss , -… last mille it´s ok …but the sfpplus4 show packet loss en its Graffic…
The SFP PLUSS have the client LAN to a device Firewall PALOALTO, what can be the solution, THANKS