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