Inflearn コミュニティ Q&A

ajax 수업듣는중 sample.html이나 다른 버튼 클릭하면

"from origin 'null' has been blocked by CORS policy: Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https.

이런 오류코드가 나옵니다.

해결방안 좀 알려주셨으면 합니다.ㅠ