Want to know about error page

i want to know about navigation error. it always appears on any instance but we are unable to solve that issue because it doesn’t indicate why this error page appears. so please tell me to remove this navigation error page with php error if any

While I am building, always keep display error messages turn on. This way you can see what the error or at least get a good idea of it:

The default error page is going to be shown any time there is an error. What I do is forward to a custom page to help user troubleshoot or at least how to report the error.

The error page is located under “Dialog Boxes”.