System.NullReferenceException: Object reference not set to an instance of an object. at SimpleAdserver.AspNetClient.SimpleAdserverClient.GetZoneContent(Int64 zoneId, String contentTemplate, String emptyTemplate)

23.Mikulás rallye - 2019.12.07.-08.

23. alkalommal jön Veszprémbe a Mikulás ! 
System.NullReferenceException: Object reference not set to an instance of an object. at SimpleAdserver.AspNetClient.SimpleAdserverClient.GetZoneContent(Int64 zoneId, String contentTemplate, String emptyTemplate)