CryptoJs AES decrypt Malformed UTF-8 data

I want to encrypt and decrypt a value using crypto-js but I am getting Malformed UTF-8 data on decryption. Here's my code : Encryption part:

      const keyUTF = CryptoJS.enc.Utf8.parse(SECRET_KEY);
      const iv = CryptoJS.enc.Base64.parse(SECRET_KEY);
      const tokenKey = getTokenKey();
      const encryptedToken = CryptoJS.AES.encrypt(
        JSON.stringify({ token }),
        keyUTF,
        {
          iv,
          // mode: CryptoJS.mode.CBC,
          // padding: CryptoJS.pad.Pkcs7,
        }
      ).toString();
      console.log("Token:", tokenKey, encryptedToken);

Decryption Part:

const keyUTF = CryptoJS.enc.Utf8.parse(SECRET_KEY);
  const iv = CryptoJS.enc.Base64.parse(SECRET_KEY);
  const tokenKey = getTokenKey();
  const encryptedToken = cookies.get(tokenKey);
  console.log(tokenKey, encryptedToken);
  let decryptedToken;
  if (encryptedToken) {
    // console.log(encryptedToken, encryptedToken.toString(CryptoJS.enc.Utf8));
    decryptedToken = CryptoJS.AES.decrypt(encryptedToken.toString(), keyUTF, {
      iv,
    }).toString(CryptoJS.enc.Utf8);
    console.log("Decrypted :", decryptedToken.toString());
  }

I have looked at multiple questions related to this and tried all of their solutions but I still get the error. I have tried:

• Passing an object as {ciphertext:value} to the decrypt function
• Using JSON.stringify with both the string and as an object(in current code)
• Passed mode and padding to encrypt/decrypt function (commented out)