ESP32 allocating IP adress

[amitabhkant]

@abuech2s

while (!Serial) {
    ;                     // Wait until serial port is ready
  }  

My guess is this part of code waits for serial port to get ready, and since your laptop is not connected to the unit, it waits indefinitely. Try this variation instead:

unsigned long startTime = millis();
while (!Serial && (millis() - startTime < 5000)) {
} 

This would wait for 5 seconds for serial port before continuing.