In NextAuth.js, why is the HTTP GET action not supported and resulting in an error?

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NextAuth.js only supports HTTP POST requests for security reasons. HTTP GET requests expose sensitive information in the URL and can be easily intercepted and manipulated by attackers. Using HTTP POST requests ensures that sensitive information is sent in the request body and encrypted, making it more difficult for attackers to intercept and manipulate. Therefore, if you try to use HTTP GET requests in NextAuth.js, it will result in an error for security reasons.