CAN Bus communication errors associated with the EV system control module, as I suspected. Basically, something interfered with data traffic on the computer network that connects all of the modules in the car together. Disconnect your 12-volt battery for a minute; reconnect the battery, then read and clear the codes with Leaf Spy Pro. If that does not clear everything, disconnect the battery for 5 minutes and try clearing the codes again.
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015; traded 8/10/2019 at 82,436 miles
White LEAF 2019 SL+ purchased 8/10/2019