permissions - Prestashop 1.7：致命错误无法打开所需的 HTMLPurifier.standalone.php

Question

我客户的网站一直正常工作，直到出现此警告和错误并且网站变得无法访问：

Warning: require_once(/homepages/19/d729760136/htdocs/clickandbuilds/PrestaShop/embout_/tools/htmlpurifier/HTMLPurifier.standalone.php): failed to open stream: Permission denied in /homepages/19/d729760136/htdocs/clickandbuilds/PrestaShop/embout_/config/config.inc.php on line 136

和错误：

Fatal error: 
require_once(): Failed opening required '/homepages/19/d729760136/htdocs/clickandbuilds/PrestaShop/embout_/tools/htmlpurifier/HTMLPurifier.standalone.php'
(include_path='/homepages/19/d729760136/htdocs/clickandbuilds/PrestaShop/embout_/vendor/pear/pear_exception:/homepages/19/d729760136/htdocs/clickandbuilds/PrestaShop/embout_/vendor/pear/console_getopt:/homepages/19/d729760136/htdocs/clickandbuilds/PrestaShop/embout_/vendor/pear/pear-core-minimal/src:/homepages/19/d729760136/htdocs/clickandbuilds/PrestaShop/embout_/vendor/pear/archive_tar:.:/usr/lib/php7.0')
in /homepages/19/d729760136/htdocs/clickandbuilds/PrestaShop/embout_/config/config.inc.php on line 136 

我认为问题是因为文件权限。但我不知道如何治疗。有什么帮助吗？

标签： permissionsprestashop-1.7htmlpurifier