Notice: Undefined variable: commentsForPDF in /var/www/html/wiki/extensions/PdfBook/PdfBookAction.php on line 135

Warning: file_put_contents(/var/www/html/wiki/images/pdf-book6605e957f11cd): failed to open stream: Permission denied in /var/www/html/wiki/extensions/PdfBook/PdfBookAction.php on line 146

Warning: unlink(/var/www/html/wiki/images/pdf-book6605e957f11cd): No such file or directory in /var/www/html/wiki/extensions/PdfBook/PdfBookAction.php on line 163

Warning: readfile(/var/www/html/wiki/images/pdf-book-cache-13cddd5d045d9c7ed5fb58c51e0e1287): failed to open stream: No such file or directory in /var/www/html/wiki/extensions/PdfBook/PdfBookAction.php on line 177