尝试安装我已按照是由其他人创建的，并且在上述问题上也存在相同的问题.但随后执行了一些步骤，该步骤在应用程序见解"中文档，并发现这些用户指定为log4net附加程序安装PreRelease软件包.完成工作后:)

I had created a canonical ASP.NET MVC example following the steps created by someone else and had the same problem above. But then followed some steps written in the Application Insights documentation and discovered that those specified installing the PreRelease package for the log4net appender. Having done that it workd :)