Shop Icon (cart) in header/menue has a broken URL

Hey guys,
thanks a lot for the awsome work – you theme is the runner!
I use fruitful with woocommerce for this site: https://kleineraugust.de/
The cart icon in the menue has a broken URL:
https://kleineraugust.de/kleineraugust/warenkorb/”
– it contains the quotation mark on the end of the URL – wich doesn′t work to open the cart.
Could you please help?

Best regards,
alyona