To Err is minimal in it's visuals. The storytelling is primarily driven by it's two voices, with only occasional glimpses of people. Luckily the sound design is impeccable, and the vocal performances of the two leads make that more than enough for the film to be engaging and by the end moving, with Liz Bishop giving a particularly heartfelt performance when visible.
I actually wish that it was longer. I was so enjoying the way that the two leads learn from, confide in, and ultimately befriend each other, that I wish we'd been given some more time to really feel what this relationship meant to both of them.
Another critique would be that maybe the editing could've been slower. As this is mainly an audio experience, I felt it would benefit to cut a little less and lean into something more meditative.
Overall, To Err is a minimal but very solid short which should establish director Nanci Cruz as a promising talent to watch.