Error handling bug obscuring issue loading constructors in Play 2.4/2.5

[tpanagos]

1. Error injecting constructor, java.util.MissingFormatArgumentException: Format specifier '%s' at play.modules.swagger.SwaggerPluginImpl.(SwaggerPlugin.scala:35) while locating play.modules.swagger.SwaggerPluginImpl at play.modules.swagger.SwaggerModule.bindings(SwaggerModule.scala:11): Binding(interface play.modules.swagger.SwaggerPlugin to ConstructionTarget(class play.modules.swagger.SwaggerPluginImpl) eagerly) (via modules: com.google.inject.util.Modules$OverrideModule -> play.api.inject.guice.GuiceableModuleConversions$$anon$1) while locating play.modules.swagger.SwaggerPlugin

1 error] at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:180) at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:131) at scala.Option.map(Option.scala:146) at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:131) at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:129) Caused by: com.google.inject.CreationException: Unable to create injector, see the following errors: