Critical Error

Could not connect to the 'whmcsmb' database.

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