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Why I am getting this error Request header field access ...

Why I am getting this error Request header field access-control-allow-origin is not allowed by Access-Control-Allow-Headers in preflight response? 1 Answer.

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查詢 「HTTP header Allow」的人也找了：

  1. Allow-Origin header
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  2. access-control-allow-origin header
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  3. Access-Control-Allow-Headers
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  4. iis access-control-allow-origin
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  5. access-control-allow-credentials
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  6. has been blocked by cors policy解決
    7.
  7. no 'access-control-allow-origin' header is present on the requested resource.
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  8. nginx access-control-allow-origin
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