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I'm working on this tutorial http://hyperledger-fabric.readthedocs.io/en/latest/build_network.html on a virtual machine Ubuntu 14.04 and I run the script ./byfn.sh -m up to bring up the network. When I run this to install the chaincode

peer chaincode install -n mycc -v 1.0 -p github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example02

I get the following error

Error: Error endorsing chaincode: rpc error: code = Unknown desc = chaincode error (status: 500, message: Error installing chaincode code mycc:1.0(chaincode /var/hyperledger/production/chaincodes/mycc.1.0 exists))

how to fix this

1 Answer

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Try to change chaincode name in install command, to something different, e.g:

peer chaincode install -n myNewCC -v 1.0 -p github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example02

An alternative could be to disable the execution of the script.sh, however, you will have to initialize and create the channel yourself

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