My Debut Drop down Menu not working

[Nath_ida]

Hello, i had a drop menu set up for now two years. It was perfectly working until few weeks ago.
I've tried to re-set up it but still nothing.
I've also found out that, on me mobile interface the menu icon (three bars) is not working at all as well.

Can you help me ?
I've tried looking similar solved issues on the discussion but nothing worked out.

here's the URL of my website : https://lechapeaumagique.com/

Thank you very much !

[Mehran_Ali]

Hi @Nath_ida 

It Seems there are some jQuery-related errors in your console try to resolve that sometimes the jQuery of the whole store won't work if there is an error otherwise you can try adding a class for mobile using jQuery on click that will help.

If This solution helps you Kindly like It  and Mark this as a Solution

if you need an expert in coding help feel free to Contact Me 

[Nath_ida]

Thank you for your anwers @Mehran_Ali 
But i have no idea what is a jQuery and what to do and where to solve those errors ?