The Same Origin Policy disallows reading the remote resource at http://localhost:4000/testing. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing). code example

Example: from origin 'http://localhost:4200' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

@CrossOrigin(origins = "http://localhost:4200")
@GetMapping("/yourPath")