[Koha] Restoration of old Koha database to new one

Hi, I have installed koha 17.11 successfully. i am trying to restore data from an old version (Koha 3.18) . after dropping the new database and restoring the old one. i tried to upgrade the database schema using *koha-upgrade-schema library, then it gives this error on command line:*Use of uninitialized value in numeric lt (<) at /usr/share/koha/intranet/cgi-bin/installer/data/mysql/updatedatabase.pl line 5531. Failed to add reserve_id to reserves tables, please refresh the page to try again. at /usr/share/koha/intranet/cgi-bin/installer/data/mysql/ updatedatabase.pl line 5591. please what can i do? Thanks.