Template process failed: undef error - DBIx::Class::Storage::DBI::_dbh_execute(): Table 'koha_library.branchcategories' doesn't exist at /usr/share/koha/lib/Koha/Objects.pm line 269
Hi Mohammad, there is not enough information here to work out the problem. You might want to try the mailing list first instead. Please include information about: - how you installed Koha - did you just update or is it a new installation? - the exact version 17.11.x you installed - step by step instructions on how to reproduce the problem
This sounds like a support request rather than a bug. Questions about Koha should be asked on the Koha mailing list (http://koha-community.org/support/koha-mailing-lists/) or in the #koha IRC channel (http://koha-community.org/get-involved/irc/). Hopefully you've already seen the Koha documentation: http://koha-community.org/documentation/ You can also find options for paid support here: https://koha-community.org/support/