FPDF error: [Error] http://trangtrinhaviet.vn/wp-content/uploads/2016/06/tranh-dinh-da-s3-300x300.jpg Missing or Please turn on "allow_url_fopen" on your server to allow insert images in PDF Document, more info here: http://stackoverflow.com/questions/3694240/add-allow-url-fopen-to-my-php-ini-using-htaccess