Notice: Use of undefined constant _PS_CONFIG_DIR_ - assumed '_PS_CONFIG_DIR_' in /presta_new/config/config.inc.php on line 36

Warning: require_once(_PS_CONFIG_DIR_autoload.php): failed to open stream: No such file or directory in /presta_new/config/config.inc.php on line 36

Fatal error: require_once(): Failed opening required '_PS_CONFIG_DIR_autoload.php' (include_path='.:/usr/local/php7.1/pear') in /presta_new/config/config.inc.php on line 36