Will happen. Only surprise is how infrequent it is, it should probably happen more often. Brush it off and focus so it doesn't happen again anytime soon.
Mentioned this a few games ago, our passing back to ederson at times is way too casual, that pass back was bobbling and on his wrong side. Not excusing ederson by saying that, he still should have comfortably managed and not fucked up but its something we need to sharpen up on.
I know he's exceptional with his feet but we need to take more care with the balls back to him otherwise there will be fuck ups direct from it.
Noticed in the second half, walkers first pass back to ederson, he took extra care to play the ball on the ground and to his left foot.