TestLink - Integration with Bugzilla

[eldadc]

I'm getting error connecting to bugzilla.
Both Bugzilla and Testlink are on the same machine in my subnet. It is an Ubunutu machine fire wall is down, I can make a login to bugzilla db from the subnet.
But still testlink send an error connection.
Added permissions on MYSQL , and Host.

Any suggestion ? where can I check log.

<!-- Template bugzilladbInterface -->
<issuetracker>
<dbhost>10.21.0.199</dbhost>
<dbname>bugzilla</dbname>
<dbschema>bugzilla</dbschema>
<dbtype>mysql</dbtype>
<dbuser>root</dbuser>
<dbpassword>root</dbpassword>
<uricreate>http://10.21.0.199/bugzilla-4.4.1/</uricreate>
<uriview>http://10.21.0.199/bugzilla-4.4.1/show_bug.cgi?id=</uriview>
</issuetracker>

[eldadc]

Case resolved.

I change the credentials to my UBUNTU user login and not my db credentials.