找不到模块； Hyperledger Fabric 教程

Question

I am trying to run a hyperledger tutorial app (fabcar).

I have followed the install and try to run node query.js .

I get this error on terminal:

module.js:529
    throw err;
    ^

Error: Cannot find module '/Users/pro/Documents/Code/HyperLegderFabric/fabric-samples/fabcar/node_modules/grpc/src/node/extension_binary/node-v57-darwin-x64/grpc_node.node'
    at Function.Module._resolveFilename (module.js:527:15)
    at Function.Module._load (module.js:476:23)
    at Module.require (module.js:568:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/pro/Documents/Code/HyperLegderFabric/fabric-samples/fabcar/node_modules/grpc/src/node/src/grpc_extension.js:30:15)
    at Module._compile (module.js:624:30)
    at Object.Module._extensions..js (module.js:635:10)
    at Module.load (module.js:545:32)
    at tryModuleLoad (module.js:508:12)
    at Function.Module._load (module.js:500:3)

I will appreciate pointers in debugging this

Answer 1

Issue was I was running on python 3.6 .

I have intially used:

npm config set python python2.7

npm install --python=/usr/bin/python

and even

sudo npm install --unsafe-perm  -g --python=python2.7

but the problem was I this just assumed python 2.7 was on my pc, allowed me to install it.

When I ran the node query.js command, grpc_node.node was still a dependency that wasnt resolved.

To solve this, I had to

• Delete the fabric folder and download it again
• Create a python 2.7 virtual environment ( conda create --name py2_env numpy python=2.7 (I use the anaconda distro))
• Run npm install

Works fine now