How to install Netbeans plugin?

Question

NetBeans

I downloaded this plugin plugins.netbeans.org/plugin/70696/arc-dark-theme, opened the settings, clicked "Import", selected the downloaded archive, the message "Select items to import" appears and nothing happens. The same problem is mentioned in the comments to this plugin, no one answered. Googling doesn't work. Well, if one such package could not be delivered, it is generally rare to find a plugin that can be installed in this way. How to import such plugins correctly?

Answer 1

I sin on the topic - also did not work. from here the norms are imported
https://netbeansthemes.com/