I am going through the Learn ESP32 with Arduino v3; the first exercise has a very simple Blink LED program.
I am able to program; connect to ESP32 DOIT V1 board; and program.  But, when it runs the LED is always ON – does not toggle every 1s.
Here is what the code looks like:

const int ledPin = 23;
 

void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(ledPin, OUTPUT);
}

void loop() {
  digitalWrite(ledPin, HIGH);  // turn the LED on (HIGH is the voltage level)
  delay(1000);                 // wait for a second
  digitalWrite(ledPin, LOW);   // turn the LED off by making the voltage LOW
  delay(1000);                 // wait for a second
}

I’ve tried other pins; but seem to toggle the LED; as seen on an scope.