[Koha] Software error:DBIx::Class::Storage::DBI::_dbh_execute(): Table 'koha_library.library_groups' doesn't exist at /usr/share/koha/lib/Koha/Objects.pm line 130

Dear Professionals, I am new to koha. I was using koha17.05 on ubuntu mysql version 5.5.14. When I tried to update koha from 17.05 to 19.05, I got the following error message. I have updated koha-upgrade-schema library also. But same error is appearing on the opac. Software error: DBIx::Class::Storage::DBI::_dbh_execute(): Table 'koha_library.library_groups' doesn't exist at /usr/share/koha/lib/Koha/Objects.pm line 130 For help, please send mail to the webmaster ([no address given]), giving this error message and the time and date of the error. I am in need of your help. I really appreciate your reply. Thanks, Ashok