unable to find newEventHub function

I think they've replaced the EventHub class with ChannelEventHub.

You can update the invoke.js file with following:

on line 105:

let event_hub = channel.newChannelEventHub('localhost:7051');
// event_hub.setPeerAddr('grpc://localhost:7053');

on line 130:

console.log('The transaction has been committed on peer ' + event_hub.getPeerAddr());

That should fix it.

Change the fabric-client npm version from "unstable" to ^1.2.1 in package.json and run npm install

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