This class is intended to be extended, allowing users to reuse some of the functionality provided here.
Value parameters
router
An optional router. If provided, in dev mode, will be used to display more debug information when a handler can't be found. This is a lazy parameter, to avoid circular dependency issues, since the router may well depend on this.
An optional router. If provided, in dev mode, will be used to display more debug information when a handler can't be found. This is a lazy parameter, to avoid circular dependency issues, since the router may well depend on this.
By default, the implementation of this method delegates to onProdServerError when in prod mode, and onDevServerError in dev mode. It is recommended, if you want Play's debug info on the error page in dev mode, that you override onProdServerError instead of this method.