Ошибка компиляции:
Arduino: 1.8.8 (Windows 10), Плата:"NodeMCU 1.0 (ESP-12E Module), 80 MHz, Flash, Disabled, 4M (no SPIFFS), v2 Lower Memory, Disabled, None, Only Sketch, 115200"
Clock5web_My:199:21: error: 'MQTT' does not name a type
Clock5web_My:199:34: error: expected unqualified-id before...