! @70no256an - Internal server error, for (POST) [/api/] ->
play.api.http.HttpErrorHandlerExceptions$$anon$1: Execution exception[[JsonMappingException: Can not construct instance of de.zalando.play.controllers.ArrayWrapper, problem: abstract types either need to be mapped to concrete types, have custom deserializer, or be instantiated with additional type information
at [Source: [B@79b686e4; line: 2, column: 12] (through reference chain: workload.yaml.ArrayPostArray["books"])]]
at play.api.http.HttpErrorHandlerExceptions$.throwableToUsefulException(HttpErrorHandler.scala:280)
at play.api.http.DefaultHttpErrorHandler.onServerError(HttpErrorHandler.scala:206)
at play.core.server.netty.PlayRequestHandler$$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:346)
Here is the swagger.yaml
When running
I have this error