I have an instance of nodebb running in a subfolder of another site that is served via https. I can view the forum site without any problems but cannot view or install plugins (its possible I cant do other things but this is the obvious problem at this point).
The error I get is the following:
Error parsing plugins : Hostname/IP doesn't match certificate's altnames: "Host: packages.nodebb.org. is not in the cert's altnames: DNS:[domain].com, DNS:www.[domain].com.
I just wanted to add that in order to use the plugin, you must on your site include a <div> or <span> with component="category/controls" (it may be empty). As you can see in the public/scrips/client.js, it's looking for that element and adding the button into it, along with its functionality.
Hope that helps and saves people some time!