Like they said, he bobbled the ball on the transfer on a potential double-play then rushed the throw to get the runner at 1B and threw off mark.
A few games ago I saw Morel charge in to take the in-between hop on a grounder instead of the long or short hop. Luckily he made the play.
I'm hoping he just needs lots of reps. But he should have taken a gazillion grounders at 3B over the winter you'd think, which is a bit worrisome. But he's made good plays at 3B this ST too, his hands/reactions seem quick enough, hopefully its mostly just the judgement stuff, which can improve with reps. It's still Feb and hasn't play in live games since Winter Ball, and i'm sure he's getting reps in on the days he isn't playing. Not worried about anything in Feb.