By default, Fastly hides all Adobe Commerce errors behind the 503 Service Unavailable error. To display the Adobe Commerce error log report number (to be able to find it in logs and see the error details), open the website omitting Fastly using these steps:
Once you see the authentic Adobe Commerce error and the error report number, you may get details in the error report file by following these steps:
./var/report/{error_number}
file.Check the server IP of your store by executing the nslookup
command in the command line on your local machine:
nslookup {your_project_id}.ent.magento.cloud
nslookup gw.{your_region}.magentosite.cloud
Add your store domain and application server IP to the hosts file on your local machine using the following format:
{server_IP} {store_domain}