When customers want to change/cancel their booking, login into the customer area, buy a gift voucher or leave a review, they are redirected to your main booking page - the page you set up in Settings>Theme and Layout>Website integration - showing the relevant content.
If the page you set up in Settings>Theme and Layout>Website integration does not exist, your customers will get a 404 or Page not found message. If the page you set up in Settings>Theme and Layout>Website integration does not contain the widget, your customers will not be able to see it.
To correct the error:
1. Go to Settings
2. Click on Theme and Layout>Website Integration
3. At point 2. Input the address of the page where you put the widget, please input the correct URL of your booking page.
4. Save