no underglow led

I'm using firmware from here https://github.com/joric/jorne-zmk-config. Commented out this part ``` # Uncomment the following lines to enable the Jorne RGB Underglow # CONFIG_ZMK_RGB_UNDERGLOW=y # CONFIG_WS2812_STRIP=y # Uncomment the following line to enable the Jorne OLED Display # CONFIG_ZMK_DISPLAY=y ``` Solder 1 underglow led on left half. Check there was voltage between vcc and gnd but there's no light. Map key for backlight on + backlight toggle + rgb on + rgb toggle but still underglow led not lighting up. What step did I miss? Thank you.