title: Composer Fatal error: Call to undefined function Symfony\Polyfill\Mbstring\iconv() in phar
body: <p>I'm using WHM/Cpanel with PHP 7.0 with all extensions like iconv, mbstring installed via easyapache 4. But when i am trying to install a magento plugin by caling
      composer require firebear/importexportfree</p>
  
  <p>I am getting this message on putty,</p>
  
  <pre><code>Fatal error: Call to undefined function Symfony\Polyfill\Mbstring\iconv() in 
  phar:///opt/cpanel/composer/bin/composer/vendor/symfony/polyfill-
  mbstring/Mbstring.php on line 513
  </code></pre>
  
  <p>I had checked on the server for the status of both the extensions iconv and mbstring using php --ri iconv and php --ri mbstring</p>