you should specify the path first, "export IDF_PATH=******", "******"means the path of "esp-idf".

hi Mostly support your product. ESP32 cannot support bluetooth 5, and 32 series has a model named ESP32-D2WD which has a 2MB flash embedded. However, ESP32 is a chip which support wifi and bluetooth simultaneously, no separate version. More detail about ESP32, you can download the documents from Esp...