bug report menu mobile

Hi,
please see this link: https://future-fund.org/address/
On this link the hamburger menu on mobile is not functioning. THis is quite strange, it works for all other pages, and also for the Dutch translation of this page https://toekomstfonds.nl/adres/
Can you advise how to fix it?
Rik

The page I need help with: [log in to see the link]