Good morning all, we are trying to upgrade our koha database but too many duplicate entry shows. ERROR - {UNKNOWN}: DBI Exception: DBD::mysql::db do failed: Duplicate entry 'ar' for key 'PRIMARY' at /usr/share/koha/lib/C4/Installer.pm line 739 This is the first error i encountered when upgrading koha from v20.05 to the latest version that is 22.11 and i already found the fix. The next error is " ERROR - {UNKNOWN}: DBI Exception: DBD::mysql::db do failed: Duplicate entry '20534' for key 'import_biblios.PRIMARY' at /usr/share/koha/lib/C4/Installer.pm line 739". we tried to locate this duplicate entry and it points to biblios in reservoir entry. Anyone of you encountered this kind of error while upgrading? I need help on how we gonna fix it. Thank you!