Hi, The file “analytics.html” is used in other parts of the Quill source code tree.
% grep -R "analytics.html" *
docs/_layouts/v0.20.html: {% include analytics.html %}
docs/_layouts/default.html: {% include analytics.html %}
If this file were just deleted, then it could happen that this would affect
building this source tree.
A possible solution to this is not to entirely delete the “analytics.html”, but
rather to delete the contents of that file within the <script>…</script> tags.

