FPDF error: Can't open image file: https://maps.googleapis.com/maps/api/staticmap?zoom=14&size=640x480&sensor=false&scale=1&key=AIzaSyChaq86B5DcqBi3SeG8OJs2h7MAA9EB-nE&markers=color:green%7C57.16218548813767,14.791283430550722%7C