Critical Error

Could not connect to the database.

WHMCS\Exception\Application\Configuration\CannotConnectToDatabase: Could not connect to the database. in /home/devpntae/public_html/vendor/whmcs/whmcs-foundation/lib/Application/ApplicationServiceProvider.php:0
Stack trace:
#0 /home/devpntae/public_html/vendor/illuminate/container/Container.php(731): WHMCS\Application\ApplicationServiceProvider->WHMCS\Application\{closure}(Object(WHMCS\Container), Array)
#1 /home/devpntae/public_html/vendor/illuminate/container/Container.php(629): Illuminate\Container\Container->build(Object(Closure), Array)
#2 /home/devpntae/public_html/vendor/illuminate/container/Container.php(1174): Illuminate\Container\Container->make('app')
#3 /home/devpntae/public_html/vendor/illuminate/support/Facades/Facade.php(151): Illuminate\Container\Container->offsetGet('app')
#4 /home/devpntae/public_html/vendor/illuminate/support/Facades/Facade.php(120): Illuminate\Support\Facades\Facade::resolveFacadeInstance('app')
#5 /home/devpntae/public_html/vendor/whmcs/whmcs-foundation/lib/Application/Support/Facades/Facade.php(0): Illuminate\Support\Facades\Facade::getFacadeRoot()
#6 /home/devpntae/public_html/init.php(0): WHMCS\Application\Support\Facades\Facade::self()
#7 /home/devpntae/public_html/supporttickets.php(0): unknown()
#8 {main}