title: unable to start nodejs app- Error: npm.load() required
body: <p>whenever I am starting my Node app it's giving following error.</p>
  
  <pre><code>Error: Failed to replace env in config: ${NPM_TOKEN}
  at /usr/local/lib/node_modules/npm/lib/config/core.js:429:13
  at String.replace (native)
  at envReplace (/usr/local/lib/node_modules/npm/lib/config/core.js:424:12)
  at parseField (/usr/local/lib/node_modules/npm/lib/config/core.js:400:7)
  at /usr/local/lib/node_modules/npm/lib/config/core.js:338:17
  at Array.forEach (native)
  at Conf.add (/usr/local/lib/node_modules/npm/lib/config/core.js:337:23)
  at ConfigChain.addString (/usr/local/lib/node_modules/npm/node_modules/config-chain/index.js:244:8)
  at Conf.&lt;anonymous&gt; (/usr/local/lib/node_modules/npm/lib/config/core.js:325:10)
  at /usr/local/lib/node_modules/npm/node_modules/graceful-fs/graceful-fs.js:78:16
  
  
  
  /usr/local/lib/node_modules/npm/lib/npm.js:29
  throw new Error('npm.load() required')
  ^
  
  Error: npm.load() required
  at Object.npm.config.get (/usr/local/lib/node_modules/npm/lib/npm.js:29:11)
  at exit (/usr/local/lib/node_modules/npm/lib/utils/error-handler.js:58:40)
  at process.errorHandler (/usr/local/lib/node_modules/npm/lib/utils/error-handler.js:387:3)
  at emitOne (events.js:77:13)
  at process.emit (events.js:169:7)
  at process._fatalException (node.js:224:26)
  </code></pre>
  
  <p>Plz provide any solution. I totally stucked with this.Due to this issue I am unable to start my app and complete my work.</p>