should have made a jsonable superclass

backend/src/main/java/model/questionnaire/Session.java

     public JsonObject asJsonObject() {
         JsonObject vResult = new JsonObject();
         vResult.put(KEY_ID, fId.toString());
-        vResult.put(KEY_RESULTS, fAnswers.toJson());
+        vResult.put(KEY_RESULTS, fAnswers.asJsonObject());
         return vResult;
     }
 

backend/src/main/java/model/questionnaire/SessionAnswers.java

     // ------------------------------------------------------------------
     // Jsonable Implementation
     // ------------------------------------------------------------------
+    public JsonObject asJsonObject()
+    {
+        JsonObject vResult = new JsonObject();
+        JsonArray vAnswers = new JsonArray();
+        fAnswers.forEach( (question, answer) -> {
+            vAnswers.add(answer.asJsonObject().putChain(KEY_QUESTION, question.asJsonObject()));
+        });
+        vResult.put(KEY_ANSWERS, vAnswers);
+        JsonArray vTraits = new JsonArray();
+        fTraits.forEach( (trait, weight) -> {
+            vTraits.add(trait.asJsonObject().putChain(KEY_WEIGHT, weight));
+        });
+        vResult.put(KEY_TRAITS, vTraits);
+        return vResult;
+    }
+
+
     @Override
     public String toJson() {
         final StringWriter writable = new StringWriter();
 
     @Override
     public void toJson(Writer writable) throws IOException {
-        JsonObject vResult = new JsonObject();
-        JsonArray vAnswers = new JsonArray();
-        fAnswers.forEach( (question, answer) -> {
-            vAnswers.add(answer.asJsonObject().putChain(KEY_QUESTION, question.asJsonObject()));
-        });
-        vResult.put(KEY_ANSWERS, vAnswers);
-        JsonArray vTraits = new JsonArray();
-        fTraits.forEach( (trait, weight) -> {
-            vTraits.add(trait.asJsonObject().putChain(KEY_WEIGHT, weight));
-        });
-        vResult.put(KEY_TRAITS, vTraits);
-        writable.write(new String(vResult.toJson().getBytes(StandardCharsets.UTF_8), StandardCharsets.UTF_8));
+        writable.write(new String(asJsonObject().toJson().getBytes(StandardCharsets.UTF_8), StandardCharsets.UTF_8));
     }
 
 }

frontend/src/component/questionnaire_result.js

 
 function QuestionnaireResult(props){
     const [resultsFetched, onResultsFetched] = React.useState(null);
+    console.log(resultsFetched);
 
     if(null === resultsFetched)
     {