What is the cause of the 500 error message on the VM? How can this problem be solved?

There are many reasons for the 500 error. Generally, if ProgramIf an error occurs, a friendly error message is returned in the browser, which is called server 500 error.
The solution is that you must get the correct error information in HTTP. The method is: Open your browser, select Tools, Internet Options, and advanced, in the advanced browsing project, there is a "Show http friendly error prompt" check box. Please cancel this check box and close the window to open ie again, so that you can get the correct error prompt.
After obtaining the correct error prompt, you can check the cause of the error according to the error prompt.