Uncaught TypeErrors have me baffled
It seems like all js variables are missing, that are in:

&lt;script type="application/json" data-drupal-selector="drupal-settings-json"&gt;{...}&lt;/script&gt;


This json array is on every page drupal delivers. You can check this on a fresh drupal install.

There can be a problem with your theme, probably with the html template.