Kepler didn't get a glove on that.
And your original point was "sun in the eyes is an error."
Which hasn't been true at least in my (considerable) lifetime.
Actually sun in the eyes has never been an error. Even when scorekeepers had some sense of pride, if an outfielder didn't get a glove on a fly ball it was almost never ruled an error.
Similar for losing balls in the metrodome roof.