Off canvas menu is not working

Hello, I have been using the off-canvas menu in combination with the Astra theme for a long time. Only since a month does the off canvas menu not open on mobile. My shopping cart won’t open either.

When a product is added to my shopping cart, the off canvas menu and shopping cart will open.

I’ve followed the debugging steps, but unfortunately still can’t figure out the problem.

Could someone help me with this please?

Regards,

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