This error page will display information that is designed to make debugging an application easier, if you deploy a CSP application then you should use the %CSP.ErrorLog error page that logs the information or your own error that displays an error message suitable for an end user rather than providing them with a lot of debug information.
Output in HTML the error information in ErrorInfo which is the array provided by DecomposeError. classmethod HyperEventError()
Output the error page as HTML. This makes use of the ##class(%CSP.Utils).DisplayAllObjects() call to display as much information as possible about the state of the %request, %response, %server objects when the error occurred.