Warning: Unknown: failed to open stream: Too many open files in system in Unknown on line 0

Fatal error: Unknown: Failed opening required '/home/greensiteinfo.com/public_html/index.php' (include_path='.:/usr/local/lsws/lsphp74/share/pear:/usr/local/lsws/lsphp74/share/php:/usr/share/pear:/usr/share/php') in Unknown on line 0