When trying to access a non-existent page / file in a domain,  do you get an additional 404 Not Found error which should actually be redirected to an ErrorDocument ?

For Eg, when I try to access a non-existent file within my account
I get the following :

Not Found :The requested URL /~joelta/noactualfile was not found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

How do I remove the above error log for the error document ?  ( the one in red font )

Use the following lines in the .htaccess file of the domain :

=============

ErrorDocument 400 default
ErrorDocument 401 default
ErrorDocument 403 default
ErrorDocument 404 default
ErrorDocument 410 default
ErrorDocument 500 default

=============

This should do the trick !