找出这个生成式聚合器中的评测错误。
JavaScript
function summarize(rows) {
const scored = rows.filter((row) => row.score);
const average = scored.reduce(
(sum, row) => sum + row.score,
0,
) / scored.length;
const failures = rows.filter((row) => row.error).length;
return {
average,
failures,
release: average >= 0.8,
};
}