A fatal error has occurred Could not connect to database for SQL SessionHandler

Horde "A fatal error has occurred Could not connect to database for SQL SessionHandler. Details h
ave been logged for the administrator"

ERROR: (CPanel server) A fatal error has occurred Could not connect to database for SQL SessionHa
ndler. Details have been logged for the administrator.
1. Check the file /usr/local/cpanel/base/horde/config/conf.php

2. You can find the following entry in the conf.php
$conf['sql']['hostspec'] = 'localhost';
$conf['sql']['username'] = 'horde';
$conf['sql']['password'] = '';
$conf['sql']['protocol'] = 'tcp';
$conf['sql']['database'] = 'horde';

4. Try to connect the database horde using the following method
#mysql -uhorde -p

You should obtain the "ERROR 1045 (28000): Access denied for user
'horde'@'localhost' (using password: YES)"

5. grant the privilege to the database using the mysql
mysql> grant all privileges on horde.* to horde@localhost identified by
'';

You can now login into the Horde Webmail now.