Hi! It was a few things, but a while ago so can't remember all of them. An example was creating a migration. I had to rely on a blog post from about a year and a few versions of Phoenix ago to get the Cli commands just to add a column to a table. Appreciate now that it is probably in the ecto docs, but that's not really made clear anywhere and even then I didn't find them easy to navigate.
Your docs in general are pretty good and comprehensive, I just felt like a few obvious things had been overlooked.
Might just be me though...!