You have sometimes wonder why your web browser write error when you want to view a site showing some error codes that you don't understand, that is the reason why i decided to show you most of the internet errors codes and what they represent (their meanings) when ever you see such errors.
 
 ERROR (Numbers)       THEIR INTERPRETATION (Meaning)
  401         Unauthorized request
  400         Bad request
  403         Forbidden
  404         Page not found
  500         internal error
  501         Not implemented
  502         Bad gateway
  503         Service timeeout
  504          Gateway timeout
  505         HTTP version not supported
  500-599      Server errors
  508                 Resource Limit Is Reached