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-book6605a1d050ea7): 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-book6605a1d050ea7): 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-cc163ce591fe5971cdb8eb9aeced4c3a): failed to open stream: No such file or directory in /var/www/html/wiki/extensions/PdfBook/PdfBookAction.php on line 177