Type error: n is not defined

const playerComponents = players.map((player, index) => (
  <Player
    index = {index}
    name = {player.name}
    score = {player.score}
    key = {player.name}
    updatePlayerScore = {updatePlayerScore}
    removePlayer = {removePlayer}
/>
));

valuehttp://localhost:8080/bundle.js:6:52103Cihttp://localhost:8080/bundle.js:14:62169Nihttp://localhost:8080/bundle.js:14:67055uahttp://localhost:8080/bundle.js:14:76632cahttp://localhost:8080/bundle.js:14:76939Wahttp://localhost:8080/bundle.js:14:80513Vahttp://localhost:8080/bundle.js:14:79984zahttp://localhost:8080/bundle.js:14:79810Uahttp://localhost:8080/bundle.js:14:79183hahttp://localhost:8080/bundle.js:14:78430Zahttp://localhost:8080/bundle.js:14:85764tshttp://localhost:8080/bundle.js:14:85977renderhttp://localhost:8080/bundle.js:14:89672fshttp://localhost:8080/bundle.js:14:87876Jahttp://localhost:8080/bundle.js:14:85182fshttp://localhost:8080/bundle.js:14:87811renderhttp://localhost:8080/bundle.js:14:90459<anonymous>http://localhost:8080/bundle.js:22:5471Thttp://localhost:8080/bundle.js:1:7171rhttp://localhost:8080/bundle.js:1:565<anonymous>http://localhost:8080/bundle.js:22:106266Thttp://localhost:8080/bundle.js:1:7171<anonymous>http://localhost:8080/bundle.js:1:7611<anonymous>http://localhost:8080/bundle.js:1:2

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