angular – 身份验证错误：预检的响应具有无效的HTTP状态代码405

Failed to load resource: the server responded with a status of 405 (Method Not Allowed)
Fetch API cannot load http://blah-blah-blah. Response for preflight has invalid HTTP status code 405

这是登录方法：

login(event,phone,password) {
event.preventDefault();
window.fetch('http://blah-blah-blah',{
  method: 'POST',headers: {
    'Accept': 'application/json','Content-Type': 'application/json'
  },body: JSON.stringify({
    phone,password
  })
})
.then(status)
.then(json)
.then((response:any) => {
  localStorage.setItem('access_token',response.id_token);
  this.router.parent.navigateByUrl('/home');
})
.catch((error) => {
  alert(error.message);
  console.log(error.message);
});
}