Fatal error: Uncaught Error: Call to undefined function Symfony\Polyfill\Mbstring\iconv_strpos() in /html/magento2/vendor/symfony/polyfill-mbstring/Mbstring.php:500 Stack trace: #0 /html/magento2/vendor/symfony/polyfill-mbstring/bootstrap.php(34): Symfony\Polyfill\Mbstring\Mbstring::mb_strpos('/html/magento2/...', '/html/magento2/', 0, 'UTF-8') #1 /html/magento2/vendor/magento/framework/Filesystem/Directory/PathValidator.php(60): mb_strpos('/html/magento2/...', '/html/magento2/') #2 /html/magento2/vendor/magento/framework/Filesystem/Directory/Read.php(82): Magento\Framework\Filesystem\Directory\PathValidator->validate('/html/magento2/', '/var/.regenerat...', NULL, false) #3 /html/magento2/vendor/magento/framework/Filesystem/Directory/Read.php(210): Magento\Framework\Filesystem\Directory\Read->validatePath('/var/.regenerat...') #4 /html/magento2/vendor/magento/framework/Code/GeneratedFiles.php(66): Magento\Framework\Filesystem\Directory\Read->isExist('/var/.regenerat...') #5 /html/magento2/vendor/magento/framework/App/Obje in /html/magento2/vendor/symfony/polyfill-mbstring/Mbstring.php on line 500