WS2812B 20 LED issue

Описание: This is a WS2812B type led strip from aliexpress. 5m long 60 leds/m. These leds are individually addressable and are being controlled by an arduino uno rev3 clone (also aliexpress).

The issue with this is that only the first 20 leds are being controlled by the arduino and the remaining 280 leds are doing something else.

I am using a fastled.io example code for the animation.