Hello
You don't have access in MySQL
It looks you have configured a password in MySQL and in Catalog the user is root and password is empty.
To check if you can access MySQL try this below:
mysql -u root (if you do not have mysql root password)
mysql -u root -p (will ask for a password)
If one of the commands above runs fine, just run the following commands below:
grant all on *.* to 'root'@'localhost';
create user bacula;
grant all on *.* to 'bacula'@'localhost' identified by 'bacula' with grant option;
flush privileges;
quit
/etc/init.d/mysql restart
Change Catalog and modify the user and password.