Hello everyone, My Institute was using Koha 16 installed on Ubuntu 14.04. With this setup it was not possible to upgrade to Koha 17.05 or the latest. Yesterday, I did the backup and upgrade the server to Ubuntu 16.04. Unfortunately, after the upgrade, Koha could not be accessed. I later installed Ubuntu 18.04 and install Koha 17.11 but after running the restore procedures as usual using the commands *1. mysql -u root -p koha_instance < backup07052018.sql * *2. sudo koha-upgrade-schema koha_instance3. sudo koha-rebuild-zebra -v -f koha_instance* I managed to access Koha, and logged in (using the users available) to the intranet side or staff client page. (8433 port or known 8080). But when I log in using the OPAC side, I got the below error that made me switch from Koha 17.11 to Koha 17.05 but got the same error. Software error: Template process failed: undef error - DBIx::Class::Storage::DBI::_dbh_execute(): Table 'koha_opac.club_enrollments' doesn't exist at /usr/share/koha/lib/Koha/Objects.pm line 269 For help, please send mail to the webmaster ([no address given]), giving this error message and the time and date of the error. After some online search, I found others were having this problem when using MYSQL but for my case, I am using MariaDB 10. I kindly ask for assistance on the above error. Regards, Fadhili