A CORS error (Cross-Origin Resource Sharing error) occurs when you're trying to make a request from one website (or domain) to another website, and the browser blocks the request for security reasons.

Why CORS Error Occurs -
CORS errors occur when a web page tries to access data or resources from a different domain, and the server of that domain hasn't granted permission for the request by including the appropriate CORS headers in its response. This security mechanism helps prevent unauthorized access and protects users' data and privacy.

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