Answer :
The preflight response's access-control-allow-headers does not permit the request header field's content-type. This assertion is accurate.
What is the access-control-request-headers needed header?
Access-Control-Request-Headers, which should be included in the response header and should permit requests from all origins, is the mandatory header for this request.
What are access-control-allow headers used for?
The Access-Control-Allow-Headers directive instructs the browser as to which request headers the client may send to the server. You can view the headers you permit in the CORSResponseFilter. One of these is not Access-Control-Allow-Methods. To determine whether a server-hosted service can be accessed from a browser on a different domain, the browser sends a preflight request.
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