/usr/share/perl5/Dancer2/Core/ is in libdancer2-perl 0.166001+dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/Dancer2/Core/App.pm
/usr/share/perl5/Dancer2/Core/Cookie.pm
/usr/share/perl5/Dancer2/Core/DSL.pm
/usr/share/perl5/Dancer2/Core/Dispatcher.pm
/usr/share/perl5/Dancer2/Core/Error.pm
/usr/share/perl5/Dancer2/Core/Factory.pm
/usr/share/perl5/Dancer2/Core/HTTP.pm
/usr/share/perl5/Dancer2/Core/Hook.pm
/usr/share/perl5/Dancer2/Core/MIME.pm
/usr/share/perl5/Dancer2/Core/Request/
/usr/share/perl5/Dancer2/Core/Request.pm
/usr/share/perl5/Dancer2/Core/Request/Upload.pm
/usr/share/perl5/Dancer2/Core/Response/
/usr/share/perl5/Dancer2/Core/Response.pm
/usr/share/perl5/Dancer2/Core/Response/Delayed.pm
/usr/share/perl5/Dancer2/Core/Role/
/usr/share/perl5/Dancer2/Core/Role/ConfigReader.pm
/usr/share/perl5/Dancer2/Core/Role/DSL.pm
/usr/share/perl5/Dancer2/Core/Role/Engine.pm
/usr/share/perl5/Dancer2/Core/Role/Handler.pm
/usr/share/perl5/Dancer2/Core/Role/HasLocation.pm
/usr/share/perl5/Dancer2/Core/Role/Hookable.pm
/usr/share/perl5/Dancer2/Core/Role/Logger.pm
/usr/share/perl5/Dancer2/Core/Role/Serializer.pm
/usr/share/perl5/Dancer2/Core/Role/SessionFactory/
/usr/share/perl5/Dancer2/Core/Role/SessionFactory.pm
/usr/share/perl5/Dancer2/Core/Role/SessionFactory/File.pm
/usr/share/perl5/Dancer2/Core/Role/StandardResponses.pm
/usr/share/perl5/Dancer2/Core/Role/Template.pm
/usr/share/perl5/Dancer2/Core/Route.pm
/usr/share/perl5/Dancer2/Core/Runner.pm
/usr/share/perl5/Dancer2/Core/Session.pm
/usr/share/perl5/Dancer2/Core/Time.pm
/usr/share/perl5/Dancer2/Core/Types.pm