Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://vtl-lab.com/VN/crecc-cms/api/member/register.json. (Reason: CORS request did not succeed).
Access to XMLHttpRequest at 'http://localhost/MySQL_pracs/InsertUser.php' from origin 'http://localhost:4200' has been blocked by CORS policy: Request header field content-type is not allowed by Access-Control-Allow-Headers in preflight response.