title: Heroku CLI Error: create is not a heroku command
body: <p>I have created heroku applications from the terminal before, but for some reason, this is not working for me:</p>
  
  <pre><code>$ heroku create my-app
  </code></pre>
  
  <p>I get the following result</p>
  
  <pre><code>Refreshing plugins... !
   ▸    semver has no commands. Is this a CLI plugin?
  Refreshing plugins... done
  Refreshing plugins... !
   ▸    semver has no commands. Is this a CLI plugin?
  Refreshing plugins... done
   ▸    create is not a heroku command.
   ▸    Perhaps you meant update
   ▸    Run heroku help for a list of available commands.
  </code></pre>
  
  <p>I updated my <code>brew</code> to have the latest version of heroku. When I run <code>heroku -v</code> I get:</p>
  
  <pre><code>heroku-cli/6.15.11 (darwin-x64) node-v9.3.0
  </code></pre>
  
  <p>I'm also pretty sure it is installed correctly. When I run <code>which heroku</code> I get:</p>
  
  <pre><code>/usr/local/bin/heroku
  </code></pre>
  
  <p>One weird clue seems to be that <code>heroku help</code> gives me the following:</p>
  
  <pre><code>Refreshing plugins... !
   ▸    semver has no commands. Is this a CLI plugin?
  Refreshing plugins... done
  Refreshing plugins... !
   ▸    semver has no commands. Is this a CLI plugin?
  Refreshing plugins... done
  Usage: heroku COMMAND
  
  Help topics, type heroku help TOPIC for more details:
  
   auth
   plugins  add/remove CLI plugins
  </code></pre>
  
  <p>Which seems like it clearly does not include <code>create</code> as one of the commands, so do I need to add <code>create</code> somehow? I know that <code>create</code> is shorthand for <code>apps:create</code> so I tried both and got the same result.</p>
  
  <p>I'm not sure if it's relevant, but I recently updated to Mac OS High Sierra.</p>