`> [Mon Mar 20 09:04:45.41809] [proxy_fcgi:error] [pid 494:tid 1397606272] [-----] AH01071: Got error 'Primary script unknown\n', referer: http://-----/mis/teacher/attendance_entry_ug.php
[Mon Mar 20 09:25:43.866] [proxy_fcgi:error] [pid 733:tid 139853632] [-----] AH01071: Got error 'Primary script unknown\n', referer: http://----/mis/teacher/attendance_entry_ug.php`
Got error 'Primary script unknown\n'
What is issue and how to solve ?