I can´t see an image gallery in a news article

Hi, good morning, i'm a newbie in contao and i have to manage a full contao web page so it is being difficult to understand.

My actual problem is the next:
I have a news article with a gallery but it doesn't show up.
http://www.aspacegalicia.org/aspace/...coca-cola.html

I also have another news article created in the same way and it works
http://www.aspacegalicia.org/aspace/...ion-libro.html

I have checked it 3 times but they are the same way created.
Sorry for my english guys. I hope you can help me.

Thanks

The galleries are not supported in the news by default... There is a news_gallery app but that is not this extension...

Sorry for my mistake. As you can see. I'm really lost with contao.

This extension allows you to create groups of images like FaceBook albums, where you can list, sort, filter and group galleries.