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