I am following the online course “Learn ESP32 with Arduino IDE“.
1: I have the WiFi client working correctly, activating red and blue LED strips   √
2: I have the complete system running on a 5Vdc battery pack   √
3: The voltages with or without the PC ESB port connected are perfect even the ESP32 3.3Vdc is good  √
4: Disconnect the PC ESB port and the ESP32 continues to appear ok, LEDs are on and the web page is good  √
5: However requesting an action on the web page to select the red or blue LED colours does not work anymore  ×
6: Activating the ESP32 on board push buttons “boot and enable” does not improve the issue  ×
7: Reconnecting the PC USB cable to the ESP32, within one second the web page works again  ?