title: Call to undefined function Symfony\Polyfill\Mbstring\iconv_strlen()
body: <p>My project works fine on localhost but not working online and this is the error:<br></p>
  
  <pre><code>Fatal error: Call to undefined function Symfony\Polyfill\Mbstring\iconv_strlen() in /home/stram/public_html/vendor/symfony/polyfill-mbstring/Mbstring.php on line 338
  </code></pre>
  
  <p>I googled it and I found that I need to install the PHP extension <code>iconv</code>. The problem that I'm using a VPS and when I went to the list of available PHP extensions I didn't found this extension !<br><br>
  <a href="https://i.stack.imgur.com/VzYvl.png" rel="noreferrer"><img src="https://i.stack.imgur.com/VzYvl.png" alt="enter image description here"></a><br>
  <a href="https://i.stack.imgur.com/arGf0.png" rel="noreferrer"><img src="https://i.stack.imgur.com/arGf0.png" alt="enter image description here"></a><br>
  <a href="https://i.stack.imgur.com/X593t.png" rel="noreferrer"><img src="https://i.stack.imgur.com/X593t.png" alt="enter image description here"></a></p>
  
  <p>Thnx in advance.</p>