Revision history [back]

The AWS-SDK 403 error message indicates that the CORS (Cross-Origin Resource Sharing) policy has prevented access to fetch from the origin 'http://localhost:3000'. This error occurs when a web application tries to communicate with a server that has a different origin or domain name than the original application. The CORS policy is a security mechanism implemented by web browsers that restricts cross-origin HTTP requests to prevent malicious attacks such as cross-site scripting (XSS). The error message indicates that the origin 'http://localhost:3000' is not allowed to access AWS resources due to the CORS policy in place. To resolve this issue, the server that hosts the AWS resources needs to allow cross-origin requests from the origin mentioned in the error message, or the web application needs to be hosted on the same domain as the AWS resources.