Display:
An error occurred while processing the request on the server. The status code returned from the server was: 503.
The only exception error in the logs:
Exception while routing request: 'Request timed out while getting response', StackTrace ' at Microsoft.SharePoint.Administration.SPRoutingReverseProxy.Execute(SPRequestManagementSettings settings, HttpContext context, SPRoutingMachineInfo finalTarget,
String connectionId)
at Microsoft.SharePoint.Administration.SPRequestManagementSettings.RouteRequest(HttpContext context, SPRoutingMachineInfo finalTarget)'
Thank you!