Ben van B

``` play.api.http.HttpErrorHandlerExceptions$$anon$1: Execution exception[[RuntimeException: scala.NotImplementedError: an implementation is missing]] at play.api.http.HttpErrorHandlerExceptions$.throwableToUsefulException(HttpErrorHandler.scala:293) at play.api.http.DefaultHttpErrorHandler.onServerError(HttpErrorHandler.scala:220) at play.api.GlobalSettings$class.onError(GlobalSettings.scala:160) at play.api.DefaultGlobal$.onError(GlobalSettings.scala:188) at play.api.http.GlobalSettingsHttpErrorHandler.onServerError(HttpErrorHandler.scala:100) at play.core.server.netty.PlayRequestHandler$$anonfun$2$$anonfun$apply$1.applyOrElse(PlayRequestHandler.scala:100) at play.core.server.netty.PlayRequestHandler$$anonfun$2$$anonfun$apply$1.applyOrElse(PlayRequestHandler.scala:99) at scala.concurrent.Future$$anonfun$recoverWith$1.apply(Future.scala:344) at scala.concurrent.Future$$anonfun$recoverWith$1.apply(Future.scala:343) at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32) ```