does not show featured image of posts in secondary language

Hello,
I have a problem with polylang and the featured images of posts in the secondary language. The secondary language URL adds /es/ after the domain and that does not find the image.
I have disabled the language of media and with the images that I insert in the posts, there is no problem, it only happens in the featured images. (I use the Phlox template, if it helps at all).
How could I make the URL of the featured image not change with the language?

Example:
principal language: https://vivacemusica.es/wp-content/uploads/2018/11/Jellyfish.jpg (works)
secondary language: https://vivacemusica.es/es/wp-content/uploads/2018/11/Jellyfish.jpg (not works, this is the problem )

The page I need help with: [log in to see the link]