Warning: require(app/Mage.php): failed to open stream: No such file or directory in /home/nybeauty/public_html/magento/install.php on line 125

Warning: require(app/Mage.php): failed to open stream: No such file or directory in /home/nybeauty/public_html/magento/install.php on line 125

Fatal error: require(): Failed opening required 'app/Mage.php' (include_path='.:/opt/cpanel/ea-php70/root/usr/share/pear') in /home/nybeauty/public_html/magento/install.php on line 125