Reproducing the ‘fbq is not defined’ checkout error

The ‘fbq is not defined’ error only appears on a checkout page that you reach through the normal booking flow.

To reproduce it:

1. Open a property page and pick dates.
2. Click Book Now to reach a populated checkout.

Why an empty checkout does not show it. If you open an empty checkout page directly, the begin_checkout data layer event is not triggered, so the error does not appear.

Still stuck? Contact the HomeRunner team with your site address and what you tried, and we take it from there.