Error in node creation

[Bindiya21]

                                                                                                                                            Eh

internal/modules/cjs/loader.js:883
throw err;
^

Error: Cannot find module 'crypto-js/sha256'
Require stack:

• /home/bindiya/pbft/chain-util.js
• /home/bindiya/pbft/wallet.js
• /home/bindiya/pbft/app.js
  at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)
  at Function.Module._load (internal/modules/cjs/loader.js:725:27)
  at Module.require (internal/modules/cjs/loader.js:952:19)
  at require (internal/modules/cjs/helpers.js:88:18)
  at Object. (/home/bindiya/pbft/chain-util.js:12:16)
  at Module._compile (internal/modules/cjs/loader.js:1063:30)
  at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
  at Module.load (internal/modules/cjs/loader.js:928:32)
  at Function.Module._load (internal/modules/cjs/loader.js:769:14)
  at Module.require (internal/modules/cjs/loader.js:952:19) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
  '/home/bindiya/pbft/chain-util.js',
  '/home/bindiya/pbft/wallet.js',
  '/home/bindiya/pbft/app.js'
  ]
  }

I'm getting this error.