Most BMSs tend to refresh every 3-5 seconds (or even more rarely), so it would be a hit or miss timing issue to get the correct values (i.e. a momentary voltage sag) recorded over to a victron system log.
That said, examining the logs brings up a number of “high DC ripple” events on your logs, a minute or so after your “low voltage” shut down. This could indicate a case of the BMS being unable to support the DC bus properly. What’s the maximum discharge current supported by the BMS?
Victron’s inverters use the DC bus’ “capacitance” extensively while supporting high transient currents. That’s why you should make sure your battery-to-inverter cable gauge is at least what is described in the manual.