@hal1000, Hi Hal, welcome to the forum!
Thank you for using code tags and providing all information required!
You did not get any diagnostic output in Serial Monitor, so I assume your program hangs.
This may be caused by having compiled for ESP32 Dev Module. It hangs on a second Serial.begin(), an issue I reported for the ESP32 package.
Try compiling e.g. for WEMOS LOLIN32 instead. Good Luck!
Jean - Marc
Maybe someone could give this issue a "booster shot"!