Notice: ob_end_clean(): failed to delete buffer. No buffer to delete. in D:\usr\Apache\htdocs\mainfile.php on line 44

Notice: import_request_variables(): No prefix specified - possible security hazard in D:\usr\Apache\htdocs\mainfile.php on line 65
Что это за ошибки?
Версия PHP-NUKE-7.6_rus_patched_3.0_phpbb_2.0.19.7z