Kernal Error in messages log

Jun  6 14:14:05  node1 /kernel: if_pfe: Error 8 (No IFD) on IF command 53 (IFD bchip stats)
Jun  6 14:14:05  node1 /kernel: if_pfe: Error 8 (No IFD) on IF command 117 (IFD queue stats)
Jun  6 14:14:05  node1 /kernel: if_pfe: Error 8 (No IFD) on IF command 56 (Ether get info)
Jun  6 14:14:05  node1 /kernel: if_pfe: Error 8 (No IFD) on IF command 5 (IFD stats)

HI, 

I keep getting the above error messages in our SRX550 cluster:  Any idea what is is and how I resolve it?