CORS stands for Cross-Origin Resource Sharing and is a security feature implemented in web browsers to prevent unauthorized access to resources on different domains. When a browser makes a request to a server on a different domain, the server must include specific headers in its response to indicate whether or not the request is allowed.
If these headers are not present or are incorrect, the browser will throw a CORS error and prevent the request from being completed. This error can occur when making requests via HTTP, HTTPS or any other protocol.
To fix this error, the server needs to be configured properly to allow cross-origin requests by including the appropriate headers in its responses. Alternatively, you can use JSONP (JSON with Padding) or proxy servers as workarounds.
