Thanks. I tried this. I used a cable and port that work with my esp8266 node MCU board.
Then I tried the command and got this:
isInactinve = 0.
terminate optins = 10000d, result = 1, !
isInactinve = 1.
kIOMessageServiceIsTerminated.
releaseResources.
wch_usb stop.
wch_usb detach. provider USB2.0-Serial.
wch_usb free.
Is this a power issue?