Cavitation
Just to build a little on the last few posts:
The investigation reports that the fuel pumps are serviceable. I take that to mean that the flow/pressure characteristics, when the pumps are bench tested on fuel, are within specification.
But when the cavitation damage occurred (and, depending on the causes, the design of the flow paths, and the metallurgy, that might have occurred relatively quickly), we can speculate that the output from the pump(s), would have been some dual phase mixture. If such a mixture was being passed by the pumps at the time the FADEC requested a higher fuel flow in response to the increased power demand, it is possible that the fuel flow rate within such a mixture would be insufficient.