S2_Nodes_Exception: Can't start nodes operation library // trace

exception 'S2_Database_Exception' with message 'User "tarifus_adm:w**********a@localhost" can't connect to Mysql database "tarifus_adm"' in /var/www/tarifus/data/private_php/_core/Main.php:8
Stack trace:
#0 /var/www/tarifus/data/private_php/_core/Main.php(8): S2_Database::getInstance(Array)
#1 /var/www/tarifus/data/private_php/_core/Main.php(8): S2_Nodes_Module_Common->__construct(Object(S2_Nodes), Array)
#2 /var/www/tarifus/data/private_php/_core/Main.php(8): S2_Nodes->getHandler('projects')
#3 /var/www/tarifus/data/private_php/_core/Main.php(8): S2_Main->getProject('tarifus')
#4 /var/www/tarifus/data/private_php/_core/Main.php(8): S2_Method->setContext('tarifus', NULL)
#5 /var/www/tarifus/data/private_php/_core/Main.php(8): S2_Method->__construct()
#6 /var/www/tarifus/data/private_php/_core/Main.php(8): S2_Method::getInstance()
#7 /var/www/tarifus/data/private_php/_core/Main.php(8): S2_Main_Api->Register()
#8 /var/www/tarifus/data/private_php/_core/main.d.php(8): S2_Main_Helper::registerAPI()
#9 /var/www/tarifus/data/private_php/_core/main.d.php(8): S2->Startup()
#10 {PATH_PUB}/_index.php(11): require('/var/www/tarifu...')
#11 {main}

Next exception 'S2_Nodes_Exception' with message 'Can't start nodes operation library' in /var/www/tarifus/data/private_php/_core/Main.php:8
Stack trace:
#0 /var/www/tarifus/data/private_php/_core/Main.php(8): S2_Nodes_Module_Common->__construct(Object(S2_Nodes), Array)
#1 /var/www/tarifus/data/private_php/_core/Main.php(8): S2_Nodes->getHandler('projects')
#2 /var/www/tarifus/data/private_php/_core/Main.php(8): S2_Main->getProject('tarifus')
#3 /var/www/tarifus/data/private_php/_core/Main.php(8): S2_Method->setContext('tarifus', NULL)
#4 /var/www/tarifus/data/private_php/_core/Main.php(8): S2_Method->__construct()
#5 /var/www/tarifus/data/private_php/_core/Main.php(8): S2_Method::getInstance()
#6 /var/www/tarifus/data/private_php/_core/Main.php(8): S2_Main_Api->Register()
#7 /var/www/tarifus/data/private_php/_core/main.d.php(8): S2_Main_Helper::registerAPI()
#8 /var/www/tarifus/data/private_php/_core/main.d.php(8): S2->Startup()
#9 {PATH_PUB}/_index.php(11): require('/var/www/tarifu...')
#10 {main}

Simbix Framework/2.1.7, Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips mod_fcgid/2.3.9 PHP/5.4.16 Aborting...