And doing a curl does return the ghost.js file:
$ curl -L https://forum.cloudron.space/plugins/nodebb-plugin-blog-comments/lib/ghost.js
(function() {
"use strict";
var articlePath = window.location.protocol + '//' + window.location.host + window.location.pathname;
var pluginURL = nbb.url + '/plugins/nodebb-plugin-blog-comments',
savedText, nodebbDiv, contentDiv, commentsDiv, commentsCounter, commentsAuthor, commentsCategory;
var stylesheet = document.createElement("link");
stylesheet.setAttribute("rel", "stylesheet");
stylesheet.setAttribute("type", "text/css");
stylesheet.setAttribute("href", pluginURL + '/css/comments.css');
...
The version of the plugin installed is 0.8.6