AES-GCM Decryption with Base64 Encoding in Go

This code snippet decrypts a base64-encoded ciphertext using AES-GCM encryption. The key, nonce, and ciphertext are all base64-encoded and are decoded before being used in the decryption process. The decrypted plaintext is then passed to the 'loader.X()' function, which is not defined in this code snippet.