I followed the docs here https://docs.microsoft.com/en-us/azure/application-gateway/application-gateway-create-multisite-portal but still getting the error :
Azure Application Gateway error 502 - Web server received an invalid response while acting as a gateway or proxy server. There is a problem with the page you are looking for, and it cannot be displayed. When the Web server (while acting as a gateway or proxy) contacted the upstream content server, i
Any help?