Besides the mistakes, which can be put down to him being asked to play too much, he often seemed too casual.
I think it was Swindon away where that back pass from Robbo hit the post and bounced out. He just watched the Swindon striker get to the follow-up and stick it in an empty net, then threw his arms in the air having made zero attempt to stop him.
Just a lack of defensive awareness that you can't really coach players to have.