Error when importing csv file onto ftp server database

Hi all, i have a csv fiile that has to be imported to a ftp server database. The code works when i am trying out the application on localhost, and the data in the file is successfully uploaded and sent in the database. however, this becomes an issue on when my files are launched on the ftp server.

I get this following error:
SQL ERROR:Access denied for user 'istaff'@'%' (using password: YES)

does anyone know what this means?

I'm attaching my code here, perhaps it might help. Thanks!!