Database Query Error - You've Probably Found a Bug

Cannot connect to database server.

Please give all the information on this page to your support personnel.

Query Connecting to database server... failed. The DBMS said this:

Access denied for user ''@'localhost' (using password: NO)

Debug Backtrace (most recent call first):

/home/rvaliedu/domains/rvali.edu.ge/public_html/openbiblio/classes/Error.php:137 FatalHandler->printBackTrace()
/home/rvaliedu/domains/rvali.edu.ge/public_html/openbiblio/classes/Error.php:105 FatalHandler->dbError('Connecting to database server...', 'Cannot connect to database server.', 'Access denied for user \'\'@\'localhost\' (using password: NO)')
/home/rvaliedu/domains/rvali.edu.ge/public_html/openbiblio/classes/Query.php:18 Fatal->dbError('Connecting to database server...', 'Cannot connect to database server.', 'Access denied for user \'\'@\'localhost\' (using password: NO)')
/home/rvaliedu/domains/rvali.edu.ge/public_html/openbiblio/shared/read_settings.php:21 Query->Query()
/home/rvaliedu/domains/rvali.edu.ge/public_html/openbiblio/shared/common.php:114 require_once('/home/rvaliedu/domains/rvali.edu.ge/public_html/openbiblio/shared/read_settings.php')
/home/rvaliedu/domains/rvali.edu.ge/public_html/openbiblio/opac/index.php:6 require_once('/home/rvaliedu/domains/rvali.edu.ge/public_html/openbiblio/shared/common.php')