http://50.19.218.171/arcgis1/rest/services
http://50.19.218.171/arcgis1/rest/servicesAnswers over http, not https. A browser on an https page will block it as mixed content, with no error text. Server to server clients are unaffected.
Answers over http, not https. A browser on an https page will block it as mixed content, with no error text. Server to server clients are unaffected.