Progress Bar seems to block theme from working

I've followed the docs and have VuePress setup with the Craft Docs theme. I've added the theme and additional markdown code in my config.js file:

module.exports = {
    ...
    theme: 'craftdocs',
    ...
    markdown: {
        anchor: { level: [2, 3] },
        config(md) {
            let markup = require('vuepress-theme-craftdocs/markup');
            md.use(markup);
        }
    }
};

When I run npm run docs:dev with the Craft theme enabled I get the following error:

WARNING in ./node_modules/vuepress-theme-craftdocs/Layout.vue?vue&type=script&lang=js (./node_modules/cache-loader/dist/cjs.js??ref--3-0!./node_modules/babel-loader/lib??ref--3-1!./node_modules/vue-loader/lib??vue-loader-options!./node_modules/vuepress-theme-craftdocs/Layout.vue?vue&type=script&lang=js)
105:50-69 "export 'pathToComponentName' was not found in '@app/util'
 @ ./node_modules/cache-loader/dist/cjs.js??ref--3-0!./node_modules/babel-loader/lib??ref--3-1!./node_modules/vue-loader/lib??vue-loader-options!./node_modules/vuepress-theme-craftdocs/Layout.vue?vue&type=script&lang=js
 @ ./node_modules/vuepress-theme-craftdocs/Layout.vue?vue&type=script&lang=js
 @ ./node_modules/vuepress-theme-craftdocs/Layout.vue
 @ ./node_modules/vuepress/lib/app/.temp/routes.js
 @ ./node_modules/vuepress/lib/app/app.js
 @ ./node_modules/vuepress/lib/app/clientEntry.js
 @ multi ./node_modules/vuepress/lib/app/clientEntry.js

I've created a short video that walks through the steps I'm taking to get the above error. http://share.barrelstrength.co/083X3W0f0v2c

Commenting out the the "configure progress bar" code Craft Docs theme Layout.vue seems to fix the immediate issue, but doesn't solve the underlying issue if a progress bar is desired. It appears pathToComponentName is not defined in my environment. I've had two other people confirm the issue exists in their environments as well.

pixelandtonic / vuepress-theme-craftdocs

Progress Bar seems to block theme from working #1