for (my $i = 0; $i < $column_count; $i++) {
my $prop = $props_to_print->[$i];
- my $propinfo = $returnprops->{$prop};
+ my $propinfo = $returnprops->{$prop} // {};
die "undefined property '$prop'" if !$propinfo;
my $title = $propinfo->{title} // $prop;