$mics->{$sec} //= mic_for($self, "$sec/", $mic_args, $lei);
next unless $self->isa('PublicInbox::NetWriter');
my $dst = $uri->mailbox // next;
- my $mic = $mics->{$sec};
+ my $mic = $mics->{$sec} // die "Unable to continue\n";
next if $mic->exists($dst); # already exists
$mic->create($dst) or die "CREATE $dst failed <$uri>: $@";
}