Content on the Confluence site could not be accessed because the Confluence server's 'Remote API' feature is disabled. The Confluence system administrator must enable this 'Remote API' feature for JIRA to successfully access this content.
이 경우 Confluence에서 환경설정 > 추가 환경 설정에서 원격 API(XML-RPC & SOAP)를 선택해 주어야 한다.