mPDF error: IMAGE Error (https://maps.googleapis.com/maps/api/staticmap?center=Na%20Hrádku%20164/,%20027%2071%20Neratovice&zoom=14&size=400x300&markers=color:black%7CNa%20Hrádku%20164/,%20027%2071%20Neratovice): Error parsing image file - image type not recognised, and not supported by GD imagecreate