mPDF error: IMAGE Error (http://maps.googleapis.com/maps/api/staticmap?center=50.5936858479,15.5940397494&key=AIzaSyADY15nwq-IdJ3bqLqdQKYCy4WNOGJIeDQ&zoom=11&size=1000x200&markers=color:pink%7Clabel:%7C50.5936858479,15.5940397494): Could not find image file