[Koha] Problem in sending email

When i run this perl ./process_message_queue.pl to test if the patron arrival emails or not it gives me this error or message unable to locate Koha configuration file koha-conf.xml at /usr/share/koha/lib/C4/Context.pm line 372. How solve it that's i need very important in my library. Ahmad Nasser koha system administrator mobil: +201110136090 -- View this message in context: http://koha.1045719.n5.nabble.com/Problem-in-sending-email-tp5814648.html Sent from the Koha-general mailing list archive at Nabble.com.