language switcher doesn’t work on desktop, only on mobile

hi there

I’m on WordPress 5.8.1 running Salient Child Theme Version: 1.0.
I installed Polylang Version 3.1.2

On desktop only, when I click on the language switcher, nothing happens. The page doesn’t switch to the other language. It works perfectly on mobile.

The difference is that, on desktop, this line is called
jQuery("html, body").animate({ scrollTop: jQuery(jQuery(this).attr("href")).offset().top - 100 }, 1000);

and it returns this error
Uncaught Error: Syntax error, unrecognized expression

Any chance somebody can help me fix this?

thanks!

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