Slim Application Error

The application could not run because of the following error:

Details

Type: PDOException
Code: 2002
Message: Could not connect to database (nika_mc).
File: /home/nika.mc/public_html/vendor/redbeanphp/rb.php
Line: 858

Trace

#0 /home/nika.mc/public_html/vendor/redbeanphp/rb.php(684): RedBeanPHP\Driver\RPDO->connect()
#1 /home/nika.mc/public_html/vendor/redbeanphp/rb.php(882): RedBeanPHP\Driver\RPDO->runQuery('SELECT `announc...', Array)
#2 /home/nika.mc/public_html/vendor/redbeanphp/rb.php(3466): RedBeanPHP\Driver\RPDO->GetAll('SELECT `announc...', Array)
#3 /home/nika.mc/public_html/vendor/redbeanphp/rb.php(5177): RedBeanPHP\Adapter\DBAdapter->get('SELECT `announc...', Array)
#4 /home/nika.mc/public_html/vendor/redbeanphp/rb.php(7172): RedBeanPHP\QueryWriter\AQueryWriter->queryRecord('announce_state', Array, NULL, Array)
#5 /home/nika.mc/public_html/vendor/redbeanphp/rb.php(8255): RedBeanPHP\Repository->find('announce_state', Array, NULL, Array)
#6 /home/nika.mc/public_html/vendor/redbeanphp/rb.php(10147): RedBeanPHP\OODB->find('announce_state')
#7 /home/nika.mc/public_html/vendor/redbeanphp/rb.php(11574): RedBeanPHP\LabelMaker->enum('announce_state:...')
#8 /home/nika.mc/public_html/index.php(146): RedBeanPHP\Facade::enum('announce_state:...')
#9 [internal function]: {closure}('1')
#10 /home/nika.mc/public_html/vendor/slim/slim/Slim/Route.php(468): call_user_func_array(Object(Closure), Array)
#11 /home/nika.mc/public_html/vendor/slim/slim/Slim/Slim.php(1355): Slim\Route->dispatch()
#12 /home/nika.mc/public_html/vendor/slim/slim/Slim/Middleware/Flash.php(85): Slim\Slim->call()
#13 /home/nika.mc/public_html/vendor/slim/slim/Slim/Middleware/MethodOverride.php(92): Slim\Middleware\Flash->call()
#14 /home/nika.mc/public_html/vendor/slim/slim/Slim/Middleware/SessionCookie.php(110): Slim\Middleware\MethodOverride->call()
#15 /home/nika.mc/public_html/vendor/slim/slim/Slim/Middleware/PrettyExceptions.php(67): Slim\Middleware\SessionCookie->call()
#16 /home/nika.mc/public_html/vendor/slim/slim/Slim/Slim.php(1300): Slim\Middleware\PrettyExceptions->call()
#17 /home/nika.mc/public_html/index.php(479): Slim\Slim->run()
#18 {main}