Problem with duplicate language in URL

Hello,

I am having a problem with my site regarding search.

When I make a search, for example “bed” this is the url that shows

mywebsite.com/en/en/?s=bed&post_type=product

However, as you can see it duplicates /en and, therefore, it shows an 404 error page.

The URL should be like this

mywebsite.com/en/?s=bed&post_type=product

How can I possibly fix this?

Best Regards