Problem:
The user has created a taxonomy and archive template for it. But it returns 404 on the frontend.
Solution:
It turns out that the user was using a reserved work for the taxonomy slug.
After changing the slug, the issue was resolved. https://codex.wordpress.org/Reserved_Terms
Problem: I have a View of terms filtered by the current post in the loop, nested inside a View of posts. After checking the posts and terms assigned, I can see the results are incorrect.
Solution: Turn off Views caching for the View of terms by adding cached="off" to the View shortcode.
Problem: I would like to modify the View's output so that odd and even rows have different markup.
Solution: In classic Views you can use the wrap, index, and pad-last settings to create different markup structures for different rows or iterations of the loop.