Need help to utilize the Owl Carousel shortcode plugin

Hi there!
I Need help to utilize the Owl Carousel shortcode plugin.
I’m studying Grav a bit by bit and looking into developed themes.
Now I want to modify a theme, and it has showcase.html.twig
There I’ve pasted all possible Owl Carousel’s options, such as:

[owl-carousel items=1 margin=10 loop=true autoplay=true autoplayHoverPause=true nav=true]
![](image-1.jpg?cropZoom=1024,300)
![](image-2.jpg?cropZoom=1024,300)
![](image-3.jpg?cropZoom=1024,300)
[/owl-carousel]

or

[owl-carousel items=2 margin=10 loop=true]
<div style="background: url({{ page.media['image-1.jpg'].url }}) 50% 50%;background-size: cover;color:#fff;">
  <h2>This is panel 1</h2>
  <p>foo</p>
</div>
<div style="background: url({{ page.media['image-2.jpg'].url }}) 50% 50%;background-size: cover;color:#fff;">
  <h2>This is panel 2</h2>
  <p>foo</p>
</div>
<div style="background: url({{ page.media['image-3.jpg'].url }}) 50% 50%;background-size: cover;color:#fff;">
  <h2>This is panel 3</h2>
  <p>foo</p>
</div>
[/owl-carousel]

But I see only a text otuput.

The shortcode plugin is enabled by default