1it is not a bug in your application, it is just a missing driver, so, you have
2couple of options...
3
4Go to your php init and uncomment the following:
5
6extension=php_mysqli.dll
7If not, try installing it at your server, it varies depending on your
8distribution.
9
10Try installing php5-mysqlnd
11
12If you cannot do it by hosting restrictions then just move to mysql driver
13(wont need to change other configurations or queries in CodeIgniter or anything
14 else...)
15
16like this (at your config file)
17
18$db['default']['dbdriver'] = 'mysql'; (you might have mysqli now)