Deploying a Hyperledger Composer blockchain business network to Hyperledger Fabric for a single organization

Question

When I deployed a single-organization network in accordance with hyperledger composer, I used “composer network ping -c admin@tutorial-network” to test the business network connection and get this error.

Please help me, thank you

Answer 1

To solve this error...

"Error: Composer runtime (0.19.12) is not compatible with client (0.20.0)"

This looks like you have recently installed a new version of composer-cli (v0.20.0), and you are connecting to a Business Network that was originally installed with a composer client (v0.19.12). You will need to force an upgrade of your Business Network to get the upgraded runtime used.

You need to do the following:

1. update the version of your business network in your package.json file.
2. Create a new .bna file with composer archive create
3. Then use composer network install to install the new version on the peer(s)
4. Use composer network upgrade to upgrade the running version of the Business Network.
5. Try the ping again :-)

Note that you need to use your PeerAdmin card for the network install and network start commands.

There is an example of this procedure in theComposer Queries tutorial.