请问大家有类似处理经验么？
> Microsoft.Extensions.Hosting.HostFactoryResolver+HostingListener+StopTheHostException: Exception of type 'Microsoft.Extensions.Hosting.HostFactoryResolver+HostingListener+StopTheHostException' was thrown.
at Microsoft.Extensions.Hosting.HostFactoryResolver.HostingListener.OnNext(KeyValuePair`2 value)
at System.Diagnostics.DiagnosticListener.Write(String name, Object value)
at Microsoft.Extensions.Hosting.HostBuilder.Build()
at Microsoft.AspNetCore.Builder.WebApplicationBuilder.Build()
at Decision.Program.Main(String[] args) in D:\Proj\aspnet-core\src\Decision.HttpApi.Host\Program.cs:line 36
System.NullReferenceException: Object reference not set to an instance of an object.
Object reference not set to an instance of an object.
查找一下当前实体关联属性是否实例化。