I added this line in ./system/application/config/mimes.php
'dwg' => array('application/acad', 'application/x-acad', 'application/autocad_dwg', 'image/x-dwg', 'application/dwg', 'application/x-dwg', 'application/x-autocad', 'image/vnd.dwg', 'drawing/dwg'),
I tried to upload a .dwg file but it shows an error like this:
The filetype you are attempting to upload is not allowed.
How can I upload a .dwg file?