Spring Boot websocket autowiring with Spring DataJPA gives nullPointer exception

Question

I'm trying to use Spring Data JPA to make a timed-quizz app. It gets the questions from the database when the socket opens and sends the data to the client after that . I've implemented the websocket and and my repositories. Yet, I'm getting a nullpointerexception whenever I try to access the data inside the database from the WebSocket Class . I've even autowired my data but yet nothing works. Here is the code of the websocket :

  @Component
  @ServerEndpoint("/websocket/{tentativeId}")
 // This annotation is equivalent to setting access URLs

 public class WebSocket {

private Session session;
@Autowired
TentativeRepository tentativeRepository;
@Autowired
QuestionRepository questionRepository;
private static CopyOnWriteArraySet<WebSocket> webSockets =new CopyOnWriteArraySet<>();
private static Map<String,Session> sessionPool = new HashMap<String,Session>();

@OnOpen
public void onOpen(Session session, @PathParam(value="tentativeId")String tentativeId) {
    this.session = session;
    webSockets.add(this);
    sessionPool.put(tentativeId, session);
    Long c = questionRepository.count();// ERRRORRRR HEREEEE
    Question q = questionRepository.findById1(Long.parseLong(tentativeId));

    this.sendOneMessage("1", c.toString());

I'm literally getting an error of null pointer on the questionRepository.count() even though it's autowired. Can someone give me an idea on what's happening exactly. When I try to use that Repository on a Controller. it works fine.

Here is the error : It's on the line of Long c = questionRepository.count()

java.lang.NullPointerException: null
    at com.neoexams.app.websocket.WebSocket.onOpen(WebSocket.java:44) ~[classes/:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]