mPDF error: IMAGE Error (https://maps.googleapis.com/maps/api/staticmap?center=Pod%20Kozím%20hrádkem/,%20Tábor&zoom=14&size=650x340&markers=color:black%7CPod%20Kozím%20hrádkem/,%20Tábor): Error parsing image file - image type not recognised, and not supported by GD imagecreate