Request header field requestuid is not allowed by Access-Control-Allow-Headers in preflight response
javaThe error message you provided suggests that your web page is trying to set a custom HTTP header, requestuid, in a cross-origin request (a request to a different domain than the one that served the web page). This request is being blocked by the server because the Access-Control-Allow-Headers response header does not include requestuid.
To fix this error, you can either remove the requestuid header from your request, or you can ask the server’s administrator to add requestuid to the Access-Control-Allow-Headers response header.
If you are the owner of the server, you can do this by adding requestuid to the Access-Control-Allow-Headers response header in your server-side code. For example, in Node.js using the cors middleware, you can do this:
app.use(cors({
exposedHeaders: ['requestuid']
}));
If you are not the owner of the server, you can try reaching out to the server’s administrator and ask them to add requestuid to the Access-Control-Allow-Headers response header.
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