did some things

src/main/java/com/ziplinegreen/vault/Controller/PostController.java

 import org.springframework.messaging.handler.annotation.SendTo;
 import org.springframework.web.bind.annotation.*;
 
+@CrossOrigin
 @RestController
 public class PostController {
 
         return postService.createPost(post);
     }
 
-    @CrossOrigin
+
     @GetMapping("/posts/all")
     public Iterable<Post> getAllPosts() {
         return postService.getAllPosts();