title: require(vendor/autoload.php): failed to open stream
body: <p>I know that this issue has been posted many times, but for me it seems to be a different problem.</p>
  <p>Indeed, this error</p>
  <blockquote>
  <p>Warning: require(vendor/autoload.php): failed to open stream: No such file or directory in C:\xampp\htdocs\site_web\send_mail.php on line 3</p>
  <p>Fatal error: require(): Failed opening required 'vendor/autoload.php' (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\site_web\send_mail.php on line 3</p>
  </blockquote>
  <p>appears at the begining of my code from this line:</p>
  <pre><code>require 'vendor/autoload.php';
  </code></pre>
  <p>So, I guess there must be a /vendor/autoload.php file somewhere in my computer (I have installed composer and ran <code>composer require phpmailer/phpmailer</code>).</p>
  <p>So, I looked for this file using: <code>dir /s autoload.php</code> in the Windows command line, and found one here: <code>C:\Windows\SysWOW64\vendor\autoload.php</code>,</p>
  <p>but for me, <strong>syswow64</strong> folder has nothing to see with <strong>autoload.php</strong>, I don't see what I am missing here.</p>