Unknown Identifier Throws Stack Trace On Login

When authenticating to the platform, if a user logs in with an identifier that is not known to the platform, a stack trace is thrown rather than a more user friendly error message.

Unknown Identifier

Error: An Internal Error Has Occurred.
Stack Trace

APP/Controller/Component/RoleComponent.php line 281 → RoleComponent->identifierIsCmpAdmin(string)
APP/Controller/AppController.php line 1002 → RoleComponent->calculateCMRoles()
APP/Controller/AppController.php line 265 → AppController->menuAuth()
[internal function] → AppController->beforeRender(CakeEvent)
CORE/Cake/Event/CakeEventManager.php line 247 → call_user_func(array, CakeEvent)
CORE/Cake/Controller/Controller.php line 920 → CakeEventManager->dispatch(CakeEvent)
APP/Controller/PagesController.php line 80 → Controller->render(string)
[internal function] → PagesController->display(string)
CORE/Cake/Controller/Controller.php line 485 → ReflectionMethod->invokeArgs(PagesController, array)
CORE/Cake/Routing/Dispatcher.php line 186 → Controller->invokeAction(CakeRequest)
CORE/Cake/Routing/Dispatcher.php line 161 → Dispatcher->_invoke(PagesController, CakeRequest, CakeResponse)
APP/webroot/index.php line 96 → Dispatcher->dispatch(CakeRequest, CakeResponse)