Composer Fatal error: Call to undefined function Symfony\Polyfill\Mbstring\iconv() in phar
Fatal error: Call to undefined function Symfony\Polyfill\Mbstring\iconv() in phar
This error typically occurs when the iconv
function from the Symfony\Polyfill\Mbstring
namespace is not available. To resolve this issue, you can try the following steps:
- Make sure the
mbstring
extension is enabled in your PHP configuration. You can check this by creating a PHP file with the following code and accessing it in your browser:
php
<?php
phpinfo();
Look for the mbstring
section in the PHP info page to verify if the extension is enabled.
If the
mbstring
extension is not enabled, you can enable it by modifying your PHP configuration file (php.ini). Locate thephp.ini
file and uncomment the line that starts withextension=mbstring
. Then, restart your web server to apply the changes.If the
mbstring
extension is already enabled, it's possible that theSymfony\Polyfill\Mbstring
package is not installed or is not being autoloaded correctly. You can try reinstalling the package using Composer by running the following command in your project directory:
bash
composer require symfony/polyfill-mbstring
This command will install the package and update your composer.json
file with the necessary dependencies.
- If the issue persists, you can try clearing the Composer cache by running the following command:
bash
composer clear-cache
After clearing the cache, try running composer install
or composer update
again to see if the error is resolved.
If none of the above steps resolve the issue, it might be helpful to provide more information about your Symfony and Composer versions, as well as any relevant code snippets or error messages you are encountering.