Warning: Undefined variable $previous in C:\WebServer\htdocs\bookshelf\storage\framework\views\2eb12f3ec99770309fac9f33c97afd6e.php on line 3

Warning: Undefined variable $next in C:\WebServer\htdocs\bookshelf\storage\framework\views\2eb12f3ec99770309fac9f33c97afd6e.php on line 16