Как исправить ошибку в CORS?

Question

[LinuxGod]

Access to fetch at 'localhost:81/auth/login' from origin 'hpzgizh3nfa51rlnkezh.com' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: The 'Access-Control-Allow-Origin' header contains multiple values 'hpzgizh3nfa51rlnkezh.com, hpzgizh3nfa51rlnkezh.com', but only one is allowed. Have the server send the header with a valid value, or, if an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.