[monero-project/monero] relay_tx error via monero_wallet_rpc: ‘Failed to parse tx metadata.’ (#4283)

and for reference,

«`
/**
* Relay a transaction
*
* @function relay_tx
* @param {string} hex — Transaction metadata in hex as string (optional)
*/
relay_tx(hex) {
let params = {
hex: hex
};
let method = this._run(‘relay_tx’, params);

let save = this.store(); // Save wallet state after transaction relay

return this._run(‘relay_tx’);
}
«`