Cant login to web interface

I am having a problem logging into the web control panel I think Im just missing a module but have no idea what it is heres the apache log

Code:

[ssl:warn] [pid 21634] AH01906: RSA server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)
[Mon Aug 11 23:31:27.639585 2014] [ssl:warn] [pid 21634] AH01909: RSA certificate configured for mail2.airexperts.org:8080 does NOT include an ID which matches the server name
[Mon Aug 11 23:31:27.643468 2014] [mpm_prefork:notice] [pid 21634] AH00163: Apache/2.4.7 (Ubuntu) mod_fcgid/2.3.9 PHP/5.5.9-1ubuntu4.3 mod_python/3.3.1 Python/2.7.6 OpenSSL/1.0.1f configured -- resuming normal operations
[Mon Aug 11 23:31:27.643492 2014] [core:notice] [pid 21634] AH00094: Command line: '/usr/sbin/apache2'
[Mon Aug 11 23:31:51.249159 2014] [fcgid:warn] [pid 21644] [client 192.168.1.56:52338] mod_fcgid: stderr: PHP Fatal error:  Class 'mysqli' not found in /usr/local/ispconfig/interface/lib/classes/db_mysql.inc.php on line 31
L

 

Which tutorial you have followed?

 

I was trying to add zend guard and it screwed everything up it was working until then.