Smart Contract Error: Unsupported instruction 0xc0

Wallet is this

const walletFile = readFileSync(cli.flags.walletFile, ‘utf8’);
const wallet = parseWallet(walletFile);

facing issue in serialization
const updateParams = serializeUpdateContractParameters(

then its giving error “user_address” - > JSON Object with one field required for an Enum

How can i get ccd testnet faucets?

You can request CCD on testnet directly in the wallet.

Can you please share steps?