title: How to run "composer update" on test/production server?
body: <p>I'm developing an application in laravel, I have completed it on localhost, but when I run it on test server it shows me error</p>
  
  <pre><code>Class 'Collective\Html\HtmlServiceProvider' not found
  </code></pre>
  
  <p>I think it need to update composer. But how do I do it on test server..!</p>
  
  <p>Please help me I'm new to laravel and web hosting.
  Thank you.</p>