NEW trace message when input components not set properly

sdk/libraries/core/action/Action.cpp

@@ -255,6 +255,7 @@ Action::ApplyStatus Action::applyInPipeline() {
     }
     else {
         status = Action::ABORTED;
+        CAMITK_TRACE(tr("Action requires targets, but none set. Status: %1").arg(getStatusAsString(status)))
     }
 
     return status;