Currently, the scenario of fatal system errors (eg when no context container or controller are found) is handled by throwing a ServletException, which is not optimal. Better to introduce an errors view page (configurable like view prefix/suffix via the WaffleServlet init and defaulting to "errors") to which the user can be redirected when the exception is thrown. The exception content is handled via the ErrorsContext - similarly to when the action method invocation fails (see WAFFLE-70).