After each deployment we check if your app is up. Therefore we call (
wget) either the default
*.herokuapps.com URL or the URL you specified here.
If the build fails during
check_url YOUR_URL it’s usually because your application does not respond with a HTTP/2xx status code at the URL you provided (or the default URL for the deployment if you didn’t provide any).
http://google.com) in the deployment configuration if you want to disable the check entirely.