500 Internal Server Error

Error in Database Connection. Could not connect to Database! Please check your connection parameters. (0)

#0 /home/tuurla/public_html/src/Wow/Database/Database.php(66): Wow\Database\Database->Connect('DefaultConnecti...')
#1 /home/tuurla/public_html/src/Wow/Database/Database.php(53): Wow\Database\Database->__construct('DefaultConnecti...')
#2 /home/tuurla/public_html/app/Controllers/BaseController.php(62): Wow\Database\Database::getInstance()
#3 /home/tuurla/public_html/src/Wow/Core/Controller.php(73): App\Controllers\BaseController->onActionExecuting()
#4 /home/tuurla/public_html/src/Wow/Core/Dispatcher.php(260): Wow\Core\Controller->init('WowFrameworkErr...', Array)
#5 /home/tuurla/public_html/src/Wow/Engine.php(411): Wow\Core\Dispatcher::dispatchRoute(Object(Wow\Net\Route), Object(Wow\Net\Request))
#6 /home/tuurla/public_html/src/Wow/Core/Dispatcher.php(196): Wow\Engine->_error(Object(Exception))
#7 /home/tuurla/public_html/src/Wow/Core/Dispatcher.php(147): Wow\Core\Dispatcher::invokeMethod(Array, Array)
#8 /home/tuurla/public_html/src/Wow/Core/Dispatcher.php(47): Wow\Core\Dispatcher::execute(Array, Array)
#9 /home/tuurla/public_html/src/Wow/Engine.php(107): Wow\Core\Dispatcher->run('error', Array)
#10 /home/tuurla/public_html/src/Wow/Engine.php(210): Wow\Engine->__call('error', Array)
#11 /home/tuurla/public_html/src/Wow/Engine.php(210): Wow\Engine->error(Object(Exception))
#12 [internal function]: Wow\Engine->handleException(Object(Exception))
#13 {main}