CodeFirst

 ```csharp // See https://aka.ms/new-console-template for more information using MQTTnet; using MQTTnet.Client; Console.WriteLine("Hello, World!"); var mqttFactory = new MqttFactory(); var mqttClient = mqttFactory.CreateMqttClient(); var mqttClientOptions = new MqttClientOptionsBuilder() .WithTcpServer("10.132.105.8") .WithClientId("ebb46a457522466882bdb6d316fa29f3")...

No mapping found for [CreateTime] in order to sort on； {"error":{"root_cause":[{"type":"query_shard_exception","reason":"No mapping found for [CreateTime] in order to sort on","index_uuid":"IqLCATt4Tb265rylzi6Mdw","index":"beetlex"}],"type":"search_phase_execution_exception","reason":"all shards failed","phase":"query","grouped":true,"failed_shards":[{"shard":0,"index":"beetlex","node":"Dbg8K8dbS--fgB5K4l81SA","reason":{"type":"query_shard_exception","reason":"No mapping found for [CreateTime] in order to sort...