Warning: require_once(./modules/system/system.install): failed to open stream: No such file or directory in /home/rjahome/public_html/install.php on line 26

Fatal error: require_once(): Failed opening required './modules/system/system.install' (include_path='.:/opt/alt/php72/usr/share/pear') in /home/rjahome/public_html/install.php on line 26