AES 256 Nodejs Encryption and Decrypting it in C#.Net

The data which i try to decrypt in C# is encrypted using AES-256 alorithm in Nodejs and the code is below.

const crypto = require('crypto');
const validator = require('validator');
const algorithm = 'aes256';
const inputEncoding = 'utf8';
const outputEncoding = 'hex';
const iv = crypto.randomBytes(16)

function encrypt(key,text) {
key = processKey(key);
let cipher = crypto.createCipheriv(algorithm, key, iv);
let ciphered = cipher.update(text, inputEncoding, outputEncoding);
ciphered += cipher.final(outputEncoding);
return ciphered;
}

Now i'm provided with a encrypted data of length 32 like "1234567304e07a5d2e93fbeefd0e417e" and key of length 32 like "123456673959499f9d37623168b2c977".

I'm trying to decrypt the same using the below c# code and getting a error as 'Length of the data to decrypt is invalid". kindly advice.

public static string Decrypt(string combinedString, string keyString)
{
    string plainText;
    byte[] combinedData = StringToByteArray(combinedString);
    Aes aes = Aes.Create();
    aes.Key = Encoding.UTF8.GetBytes(keyString);
    byte[] iv = new byte[aes.BlockSize / 8];
    byte[] cipherText = new byte[combinedData.Length - iv.Length];
    Array.Copy(combinedData, iv, iv.Length);
    Array.Copy(combinedData, iv.Length, cipherText, 0, cipherText.Length);
    aes.IV = iv;
    aes.Mode = CipherMode.CBC;
    ICryptoTransform decipher = aes.CreateDecryptor(aes.Key, aes.IV);

    using (MemoryStream ms = new MemoryStream(cipherText))
    {
        using (CryptoStream cs = new CryptoStream(ms, decipher, CryptoStreamMode.Read))
        {
            using (StreamReader sr = new StreamReader(cs))
            {
                plainText = sr.ReadToEnd();                 
            }
        }

        return plainText;
    }
}
public static byte[] StringToByteArray(string hex) {
return Enumerable.Range(0, hex.Length)
                 .Where(x => x % 2 == 0)
                 .Select(x => Convert.ToByte(hex.Substring(x, 2), 16))
                 .ToArray();
}

Below is the Decryption code in Node.js which works fine

const crypto = require('../functions/crypto');
const assert = require('assert');
const { v4: uuidv4 } = require('uuid');
describe('crypto module', function() {
it('should work', function(done) {
    const toHash = 'Octomate';
    const hashKey = uuidv4();

    const hash = crypto.encrypt(hashKey, toHash);
    const decrypted = crypto.decrypt(hashKey, hash);

    assert.strictEqual(toHash, decrypted);
    done();
});
});

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