asp.net core mvc HTTP Error 502.5

Common causes of this issue:

• The application process failed to start
• The application process started but then stopped
• The application process started but failed to listen on the configured port

Troubleshooting steps:

• Check the system event log for error messages
• Enable logging the application process' stdout messages
• Attach a debugger to the application process and inspect

For more information visit: https://go.microsoft.com/fwlink/?LinkID=808681

解决方法：

web.config 中 删除 " -argFile IISExeLauncherArgs.txt" 即可。

 <aspNetCore processPath="dotnet" arguments=".demo.dll -argFile IISExeLauncherArgs.txt" forwardWindowsAuthToken="false" stdoutLogEnabled="false" stdoutLogFile=".logsstdout" />