How to pass html validation when using angular-carousel?

Question

JavaScript

Good day!
There is a carousel which is implemented through angular-carousel

<ul rn-carousel class="intro-slider" rn-carousel-index="carouselIndex" rn-carousel-controls rn-carousel-duration="400" rn-carousel-controls-allow-loop rn-carousel-auto-slide="5" rn-carousel-easing="easeOutSine">

when running through the w3c validator, an error occurred on the rn-carousel attributes.
I'm working with angular for the first time, and the method of solving by adding data- to attributes just breaks the carousel and it doesn't work.
What am I doing wrong?

Answer 1

these are not critical errors
in the validator, you should pay attention to not closed tags, etc.