Access to XMLHttpRequest at '...' from origin 'http://localhost:4201' has been

Question

Access to XMLHttpRequest at '...' from origin 'http://localhost:4201' has been

blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.

Данные и модель верные

Запрос выглядит так:

return this.http.post(SQS_API_URL('...'), data, {
headers: {
'Access-Control-Allow-Headers': 'Content-Type'
},
withCredentials: true
})

Хотел спросить, это у меня проблема на фронте, или все-таки стоит бэкэндщику написать?