I have npm start server then show this message

Issue:-

I have npm start server then show this message

[nodemon] starting node -r ts-node/register src/app.ts
Error: Cannot find module 'bcrypt'
Require stack:

• 
  
  [nodemon] starting node -r ts-node/register src/app.ts
  Error: Cannot find module 'bcrypt'
  Require stack:
  
  e:\anup\project\ecommerce3\Spurtcommerce-alpha-community-v2.2.0\api\src\api\models\User.ts
  e:\anup\project\ecommerce3\Spurtcommerce-alpha-community-v2.2.0\api\src\api\repositories\UserRepository.ts
  e:\anup\project\ecommerce3\Spurtcommerce-alpha-community-v2.2.0\api\src\auth\AuthService.ts
  e:\anup\project\ecommerce3\Spurtcommerce-alpha-community-v2.2.0\api\src\auth\authorizationChecker.ts
  e:\anup\project\ecommerce3\Spurtcommerce-alpha-community-v2.2.0\api\src\loaders\expressLoader.ts
  e:\anup\project\ecommerce3\Spurtcommerce-alpha-community-v2.2.0\api\src\app.ts
  at Function.Module.resolveFilename (internal/modules/cjs/loader.js:625:15)
  at Function.Module.load (internal/modules/cjs/loader.js:527:27)
  at Module.require (internal/modules/cjs/loader.js:683:19)
  at require (internal/modules/cjs/helpers.js:16:16)
  at Object.<anonymous> (e:\anup\project\ecommerce3\Spurtcommerce-alpha-community-v2.2.0\api\src\api\models\User.ts:11:1)
  at Module.compile (internal/modules/cjs/loader.js:777:30)
  at Module.m.compile (e:\anup\project\ecommerce3\Spurtcommerce-alpha-community-v2.2.0\api\node_modules\ts-node\src\index.ts:439:23)
  at Module._extensions..js (internal/modules/cjs/loader.js:788:10)
  at Object.require.extensions.<computed> [as .ts] (e:\anup\project\ecommerce3\Spurtcommerce-alpha-community-v2.2.0\api\node_modules\ts-node\src\index.ts:442:12)
  at Module.load (internal/modules/cjs/loader.js:643:32)
  [nodemon] app crashed - waiting for file changes before starting...

Solution :

Use bcrypt version according to node version. Try to install bcrypt npm package separately like this 
If your node version is 8 use this command line npm

 npm install bcrypt@1 --save

If your node version is 10,11 use this command line 

npm install bcrypt@3 --save

maybe its will help you..