next-auth, credential provider, jwt token

I'm trying to configure next-auth with using my api, I using this topic https://dev.to/mabaranowski/nextjs-authentication-jwt-refresh-token-rotation-with-nextauthjs-5696 but when i sending post req with login and pass, my browser trying to get req to localhost/api/auth/provider, then i get 404 error with this pages enter image description here