Am trying to get my output of data to this format

({
    "items": [
       {
            "title": "Valls"
       },
       
       {
            "title": "AUT15605"
       },
       {
            "title": "10UT15605"
       }
        ]
})

[download]

Am getting this error with my code

Can't modify private hash in concatenation (.) or string 
my $dbh = DBI->connect("DBI:mysql:$dbname:$host", $usr, $pwd, {
                                  RaiseError => 1,
                                  }) or die $DBI::errstr;

my $sth = $dbh->prepare("SELECT titles FROM tbl_1");
$sth->execute();
my $Data = $sth->fetchall_arrayref();
my %output;

foreach my $Data (@$Data) {
    
my ($title) = @$Data;

%output .= (
  'items' => [("title" => "$title")]
);
}


my $results = to_json(\%output);

print "Content-type: text/html\n\n";  
print $results;

[download]

In reply to Returning data by frank1

Title:
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