/var/lib/lemonldap-ng/manager/notfound.html is in liblemonldap-ng-manager-perl 1.2.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | <html>
<head>
<title>Page not found</title>
</head>
<body style="background:#FFF;text-align:center;">
<h1>Page not found</h1>
<h2>Please install documentation package to get offline doc</h2>
</body>
</html>
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