How to fix Tx FCS Errors

I got a CCR1072 with a SFP+ that since yesterday started incrementing Tx FCS Error counter.
I looked around but all I can find is about FCS from bad cables which I suppose would be in Rx.

Question is: do someone know where Tx FCS Errors are from, what can cause them?

What kind of cable is that ?
Is it a Fiber Cable ?

Is the CCR Upgraded? ROS and Firmware ?
What device is that unknown cable connected to ?

In general FCS errors most times are coming from cabling problems…