У вашего броузера проблема в совместимости с HTML5
This video takes you through how to build the ESP32 Lua (NodeMCU) firmware for your ESP32 device. I show you how to take a from-scratch Ubuntu virtual machine to a full build setup including installing the ESP32 firmware on an ESP32 Pico device via USB. I then show you how to connect to ChiliPeppr's ESP32 web IDE workspace with serial port JSON server to upload your Lua code to get it running.
ChiliPeppr ESP32 Workspace
http://chilipeppr.com/esp32
ChiliPeppr MakerForums for ESP32 Lua (NodeMCU)
https://forum.makerforums.info/c/ChiliPeppr/esp32-lua