title: Node error when I deployed smart contract - Web3.js
body: <p>I get this error when I deployed smart contract to my private chain.</p>
  
  <pre><code>Error: Node error: {"code":-32000,"message":"unknown account"}
  </code></pre>
  
  <p>This is my web3.js code. </p>
  
  <pre><code> const bytecode = "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"
      var itemContract = new this.props.web3.eth.Contract([{"constant":true,"inputs":[],"name":"getItem","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"itemId","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[{"name":"id","type":"uint256"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"}]);
  
  itemContract.deploy({
    data: bytecode,
    arguments:[1]
  })
  .send({
    from: decryptEtherAccount.address,
    gas: 0,
    gasPrice: '0',
  }).on('error', (error) =&gt; {
      console.log("Error: ", error);
  }).on('transactionHash', (transactionHash) =&gt; {
      console.log("TxHash: ", transactionHash);
  }).on('receipt', (receipt) =&gt; {
    console.log("Address: ", receipt.contractAddress)
  }).then((newContractInstance) =&gt; {
      console.log(newContractInstance);   
  }).catch(function(error) {
      console.log(error);
  });
  </code></pre>
  
  <p>Could you give me any advise why I am getting this error, please?</p>