Tableau 埋め込みビューで次のエラーが発生することがあります。
Access to fetch at 'https://pod.online.tableau.com/vizportal/api/web/v1/auth/embed/signin' from origin 'URL' 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. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled. (オリジン 'URL' から 'https://pod.online.tableau.com/vizportal/api/web/v1/auth/embed/signin' で取得するためのアクセスは CORS ポリシーによってブロックされています: プリフライト要求への応答がアクセス制御チェックに合格しません: 要求されたリソースに 'Access-Control-Allow-Origin' ヘッダーが存在しません。あいまいな応答がニーズを満たす場合は、要求のモードを 'no-cors' に設定し、CORS を無効にしてリソースを取得してください。)
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