In goconvey, there's a feature that shows package coverage, and when you click on the package under analysis, the go coverage tool pops up, showing the source code, colored by what has and hasn't been covered.
However, there are many packages in my SUT that, when clicked on, don't show any test coverage, and even 404. For example, clicking on package db from that list:
What is causing this and how do I remedy it?