View Actual Error in SharePoint Without 'something Went Wrong' in SharePoint (Enable Debug Mode in SharePoint)

At some instances SharePoint developers my need to

Step One:

Go to your SharePoint web.config file and open it with admin privileges in a text editor(notepad).

<local file location>\inetpub\wwwroot\wss\VirtualDirectories\<SharePoint Web App>\web.config

Example:

C:\inetpub\wwwroot\wss\VirtualDirectories\8888\web.config

Step Two:

Make your compilation debug mode true.

Step Three:

Make your Call stack true.

Step Four:

CustomErrors mode to off.

 

Finally:

You will be able to view the actual error without customizing it in debug mode:

Note

It’s better if you keep a backup of the above file before you make any changes, because sometimes your modifications to SharePoint web applications web.config file may lead to loss of all you have.

Further references:

https://msdn.microsoft.com/en-us/library/ee231550.aspx