Unable to light up LED with LED Brightness Control

[raysii3]

I managed to compile and upload the latest 1.6.1 library on ESP32 dev module, but am unable to light up the LED using the LEDControl example. Both digital and analog doesn't work.

That said, the ESP32 board does receive input from the app, verified in the Serial Monitor, showing the LED pin, state and brightness.

platformio.ini

[env:esp32doit-devkit-v1]
platform = https://github.com/pioarduino/platform-espressif32.git
board = esp32doit-devkit-v1
framework = arduino
monitor_speed = 115200
lib_deps=
    stempedia/DabbleESP32@^1.6.1
build_unflags = -Werror=return-type

Please advise.