During Fetch Method changed to Options with 200 status and succes fetch

Question

I have got problem with Fetch in React, I'm using this code, and i should recive this status http://docs.recruitment-api.pyt1.stg.jmr.pl/# But i receive Succes: {"message":"The method is not allowed for the requested URL."} with Status 200 OK Also methods change to OPTIONS http://prntscr.com/lu0lat

submitToApi = e => {
e.preventDefault();
const url =
  'https://cors-anywhere.herokuapp.com/http://recruitment-api.pyt1.stg.jmr.pl/login';
const data = {
  login: this.state.email,
  password: this.state.password
};
fetch(url, {
  method: 'POST',
  body: JSON.stringify(data),
  headers: {
    'Content-Type': 'application/json'
  }
})
  .then(res => res.json())
  .then(response => console.log('Succes: ', JSON.stringify(response)))
  .catch(error => console.error('Error: ', error));
this.setState({
  email: '',
  password: ''
});

};

Answer 1

There is nothing wrong in your react/fetch code. You bypass CORS, but probably the api on .pyt1.stg.jmr.pl is understanding it and returning you the response with {"message":"The method is not allowed for the requested URL."}

EDIT: try to run fetch part from NodeJS to verify