The documentation states very clearly that the route should look like this:
For the GraphQL endpoint, enter https://<my_domain.com>/api/2019-07/graphql, where <my_domain.com> is the domain of your shop. The domain must be either a connected domain or your shop's <shop>.myshopify.com domain.
Unfortunately when using any version specific endpoint, such as this
The browser issues the following errors
When using the following route, however, everything works fine.
Any help would be greatly appreciated.