CATERR detected! No MCA data found

Mac
#1

Hi all.

Unfortunately, my MacBook Pro (13-inch, 2016, Four Thunderbolt 3 Ports) is starting to have random crashes.

It is connected via an OWC Thunderbolt 3 Dock to a 24" Cinema Display. I have only noted crashes whilst connected, though it is most of the time.

Error log/crash report includes

CATERR detected! No MCA data found.

and

machine check

How concerned should I be that there is a hardware fault, and this is likely getting worse? (One of the speakers gave out a while back, and I have turned it off?)

Thanks!