Recovering from the Yoast Attachment URL Bug

The following documents my journey while trying to fix the Yoast attachment URL bug. The issue is described, along with a formal apology, in this blog post. It all began when one of our SEO client sites became a victim of the Yoast attachment URL bug with an update done to the Yoast SEO plugin. This was an appropriate test because the client is Digiceed, a provider of SEO services in London.