title: Hyperledger fabric chaincode upgrade
body: <p>I have setup the hyper-ledger fabric network with 2 organisation, and have install the 
  fabcar chain-code with version v1.1 on peer and i am keeping the storage of blockchain. </p>
  
  <p>Next i added more methods on fabcar, Trying to upgrade the exist fabcar to v1.2, but i am facing the error.</p>
  
  <blockquote>
    <p>Error: could not assemble transaction, err proposal response was not successful, error code 500, msg cannot get package for chaincode (fabcar:1.2)</p>
  </blockquote>
  
  <p>I am using the below command to upgrade the chaincode</p>
  
  <pre><code>peer chaincode upgrade -o orderer.example.com:7050 --tls --cafile $ORDERER_CA -C mychannel -n fabcar -v 1.2 -c '{"Args":[""]}' -P "OR('Org1MSP.peer','Org2MSP.peer')"
  </code></pre>