Problem with PDF reports in free hosting

I have a page that requires the generation of PDF reports to show data from a MySQL database, I use the FPDF library. When I generate them in local I work perfectly but when I upload it Hostinger nothing is generated, I download the pdf file but Adobe shows me a warning that the file was not decompressed.

Annex the code of one of the reports to see what they think. I appreciate the help in advance.

<?php 
header("Content-Type: text/html; charset=UTF-8");
require('../../lib/fpdf/fpdf.php');
date_default_timezone_set('America/Mexico_City');
class PDF extends FPDF {
    //cabecera de la pagina
    function Header(){
        global $title;
        //Arial bold 15
        $this->setFont('Arial','B',15);
        //calculamos ancho y posicion del titulo
        $w = $this->GetStringWidth($title)+6;
        $this->SetX((308-$w)/2);
        //colores de los bordes, fondo y texto
        $this->SetDrawColor(0,80,180);
        $this->SetFillColor(230,230,0);
        $this->SetTextColor(220,50,50);
        //ancho del borde (1mm);
        $this->SetLineWidth(1);
        //titulo
        $this->Cell($w,9,$title,1,1,'C',true);

        //salto de linea
        $this->Ln(6);

        //Logo
        $this->Image('../img/urss_mapa.png',10,8,33);
        //Arial bold 15
        $this->SetFont('Arial','B',15);
        //Movernos a la derecha
        $this->Cell(70);
        //titulo
        $this->Cell(148,10,'Obras en proceso',1,0,'C');
        $this->setFont('Arial','B',10);
        $this->Cell(15);
        $time = time();
        $this->Cell(50,10,'Fecha: '.date('d-m-Y (H:i:s)',$time).'',0);
        //salto de linea
        $this->Ln(17);

    }
    //pie de pagina
    function Footer(){
        //posicion a 1,5 cm del final
        $this->SetY(-15);
        //Arial italic 8
        $this->SetFont('Arial','I',8);
        //numero de la pagina
        $this->Cell(0,10,'Pag. '.$this->PageNo().'/{nb}',0,0,'C');
    }
    function cargarDatos(){
        require_once '../conexionOO.php';
        $query = "SELECT DISTINCT obras.Nombre, Descripcion,FechaEntrega, Costo, Estatus FROM obras, avances_de_obra, obras_terminadas WHERE obras.Folio=avances_de_obra.Folio AND Estatus='inconclusa' AND obras_terminadas.Folio!=obras.Folio ";
        $result = $conn->query($query) or die($conn->error._LINE_);

        //colores, ancho de linea y fuente en negrita
        $this->SetFillColor(255,0,0);
        $this->SetTextColor(255);
        $this->SetDrawColor(128,0,0);
        $this->SetLineWidth(.3);
        $this->SetFont('Arial','B',12);

        //Anchura de las columnas
        $w = array(80,90,30,28,30);
        //titulos de las columnas
        $this->Cell(10);
        $titulosColumnas = array('Nombre','Descripcion','Entrega','Costo','Estatus');
        for($i=0; $i<count($titulosColumnas);$i++)
            $this->Cell($w[$i],4,$titulosColumnas[$i],1,0,'C',true);

        $this->Ln();

        //Restauracion de colores y fuentes
        $this->SetFillColor(224,235,255);
        $this->SetTextColor(0);
        $this->SetFont('Arial','',10);

        //Datos
        $fill = false;

        if($result->num_rows > 0){

            while($row = $result->fetch_assoc()){
                $this->Cell(10);
                $this->Cell($w[0],6,$row["Nombre"],'LR',0,'L',$fill);
                $this->Cell($w[1],6,$row["Descripcion"],'LR',0,'L',$fill);
                $this->Cell($w[2],6,$row["FechaEntrega"],'LR',0,'L',$fill);

                $this->Cell($w[3],6,$row["Costo"],'LR',0,'L',$fill);
                $this->Cell($w[2],6,$row["Estatus"],'LR',0,'L',$fill);

                $this->Ln();
                $fill = !$fill;
            }
            //linea de cierre
            $this->Cell(10);
            $this->Cell(array_sum($w),0,'','T');

        }

    }
}
//creacion del objeto de la clase heredada
$pdf = new PDF('L','mm','A4');

$title = 'Construc-toro Max';
$pdf->SetTitle($title);
$pdf->AliasNbPages();
$pdf->AddPage();
$pdf->SetFont('Times','',12);
$pdf->cargarDatos();
$pdf->Output();

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