hyperledger-sawtooth error

[yerrojusubbachary]

while creating application using hyper-ledger sawtooth , i have been facing some errors when attempt to npm install for transaction processor.

subbu@ubuntu:~/Downloads/education-master/LFS171x/sawtooth-material/sawtooth-tuna/processor$ npm start

Sawtooth-tuna-chain-processor@0.0.0 start /home/subbu/Downloads/education-master/LFS171x/sawtooth-material/sawtooth-tuna/processor
node index.js

module.js:471
throw err;
^

Error: Cannot find module '../build/Release/zmq.node'
at Function.Module._resolveFilename (module.js:469:15)
at Function.Module._load (module.js:417:25)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object. (/home/subbu/Downloads/education-master/LFS171x/sawtooth-material/sawtooth-tuna/processor/node_modules/zeromq/lib/index.js:6:11)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)

npm ERR! Linux 4.4.0-31-generic
npm ERR! argv "/usr/bin/node" "/usr/bin/npm" "start"
npm ERR! node v6.12.3
npm ERR! npm v3.10.10
npm ERR! code ELIFECYCLE
npm ERR! Sawtooth-tuna-chain-processor@0.0.0 start: node index.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the Sawtooth-tuna-chain-processor@0.0.0 start script 'node index.js'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the Sawtooth-tuna-chain-processor package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node index.js
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs Sawtooth-tuna-chain-processor
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls Sawtooth-tuna-chain-processor
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR! /home/subbu/Downloads/education-master/LFS171x/sawtooth-material/sawtooth-tuna/processor/npm-debug.log
please somebody help me to sort out this issue...