message is null

[cagy520]

public static void SendMessage(object message)
{
Logger.LogNotice($"Sending message of type {message.GetType()}");
using (var writer = File.AppendText(FileName))
{
writer.Write(JsonConvert.SerializeObject(message, SerializerSettings));
writer.Flush();
}

 Logger.LogNotice("Message successfully sent");

}

message is null