title: 'Couldn't find that process type' heroku node deployment
body: <p>I'm getting 'Couldn't find that process type' when I try to do <code>$ heroku ps:scale web=1</code>. I looked at some other solutions that suggested to make sure my Procfile is spelled correctly and pushed correctly, which is. </p>
  
  <p>This is the exact error I get: </p>
  
  <pre><code>    heroku ps:scale web=1
  Scaling dynos... !
   ▸    Couldn't find that process type.
  Error: ENOENT: no such file or directory, open '/Users/XXXXXX/.cache/heroku/error.log'
      at Object.fs.openSync (fs.js:584:18)
      at Object.fs.writeFileSync (fs.js:1316:33)
      at Object.fs.appendFileSync (fs.js:1362:6)
      at log (/usr/local/Cellar/heroku/6.6.7/libexec/node_modules/heroku-cli-util/lib/errors.js:87:6)
      at handleErr (/usr/local/Cellar/heroku/6.6.7/libexec/node_modules/heroku-cli-util/lib/errors.js:102:9)
      at process._tickCallback (internal/process/next_tick.js:109:7)
  </code></pre>