خطای 500 internal server error در Cpanel

این کد تو cpanel خطای 500 internal server error میده ولی تو XAMPP درسته

<?php





class AesCipher {

    

    private const OPENSSL_CIPHER_NAME = "aes-128-cbc";

    private const CIPHER_KEY_LEN = 16; //128 bits

    private static function fixKey($key) {

        

        if (strlen($key) < AesCipher::CIPHER_KEY_LEN) {

            //0 pad to len 16

            return str_pad("$key", AesCipher::CIPHER_KEY_LEN, "0"); 

        }

        

        if (strlen($key) > AesCipher::CIPHER_KEY_LEN) {



            return substr($str, 0, AesCipher::CIPHER_KEY_LEN); 

        }

        return $key;

    }

    

    static function encrypt($key, $iv, $data) {

        $encodedEncryptedData = base64_encode(openssl_encrypt($data, AesCipher::OPENSSL_CIPHER_NAME, AesCipher::fixKey($key), OPENSSL_RAW_DATA, $iv));

        $encodedIV = base64_encode($iv);



             $encryptedPayload = $encodedEncryptedData;



        return $encryptedPayload;

    }

    

    static function decrypt($key,$iv, $data) {

      

      

        $decryptedData = openssl_decrypt(base64_decode($data), AesCipher::OPENSSL_CIPHER_NAME, AesCipher::fixKey($key), OPENSSL_RAW_DATA, $iv);





        return $decryptedData;

    }

};





?>