DBIx::Class::Storage::DBI::catch {...} (): DBI Connection failed: DBI connect('dbname=koha_acqref;host=db;port=3306','koha_acqref',...) failed: Unknown server host 'db' (-2) at /usr/share/perl5/DBIx/Class/Storage/DBI.pm line 1639. at misc/devel/update_dbix_class_files.pl line 102