DATABASE ERROR: CONNECTION FAILED! + cpanel

[a24uall]

Getting the below error when I try to login to roundcube

DATABASE ERROR: CONNECTION FAILED!

Unable to connect to the database!
Please contact your server-administrator.

Solution :

mysql -e "drop database roundcube";
/usr/local/cpanel/bin/update-roundcube --force

If you cant remove the database as in this post
viewtopic.php?f=84&t=121#p136
yes, the solution is there