Fatal error: Uncaught exception 'Exception' with message 'FPDF error: No page has been added yet' in /home/pdfpack/web/enganchecubano.com/public_html/fpdf.php:271 Stack trace: #0 /home/pdfpack/web/enganchecubano.com/public_html/fpdf.php(1450): FPDF->Error('No page has bee...') #1 /home/pdfpack/web/enganchecubano.com/public_html/fpdf.php(643): FPDF->_out('0.00 841.89 566...') #2 /home/pdfpack/web/enganchecubano.com/public_html/open-channel-hydraulics-book-13b68.pdf(74): FPDF->Cell(0, 6, '1: Open-channel...', 0, 1, 'L', true) #3 /home/pdfpack/web/enganchecubano.com/public_html/open-channel-hydraulics-book-13b68.pdf(101): PDF->ChapterTitle(1, 'Open-channel hy...') #4 /home/pdfpack/web/enganchecubano.com/public_html/open-channel-hydraulics-book-13b68.pdf(230): PDF->PrintChapter(1, 'Open-channel hy...', 'Open-Channel Hy...', '.') #5 {main} thrown in /home/pdfpack/web/enganchecubano.com/public_html/fpdf.php on line 271