Fatal error: Uncaught Exception: Could not locate PDF on 'samplepdfs/one.pdf' in /var/www/html/includes/PDFMerger/PDFMerger.php:58 Stack trace: #0 /var/www/html/includes/PDFMerger/sample.php(6): PDFMerger->addPDF() #1 {main} thrown in /var/www/html/includes/PDFMerger/PDFMerger.php on line 58