Adds extra language prefix to wp-content/uploads

Hi,
A while ago a problem started appearing on a site I use your plugin on, namely, images from the site are appended an extra language prefix, so instead of “/wp-content/uploads/2019/01/image.jpg” they are rewritten like “/en/wp-content/uploads/2019/01/image.jpg”, or “/hu/wp-content/uploads/2019/01/image.jpg”, and that is a problem, because images will be not found on those URLs.

Can you tell me how to fix this ?
Thank you