* Activate offline circulation in system preferences
* Go to Circulation > Inbuilt offline circulation
* Download records
The page is stuck downloading forever.
With the developer tools you can see:
CGI::Compile::ROOT::kohadevbox_koha_offline_circ_download_2epl::get_data(): DBI Exception: DBD::mysql::st execute failed: 'koha_kohadev.borrowers.cardnumber' isn't in GROUP BY at /kohadevbox/koha/offline_circ/download.pl line 84
at /usr/share/perl5/DBIx/Class/Exception.pm line 77
*** This bug has been marked as a duplicate of bug 29371 ***