我试图使用chartjs构建一个LineChart，但我遇到了一些错误，我不能告诉的来源，数据是从服务器传输的，并（根据日期和coinValue）拆分刚刚好。任何想法是什么问题？
以下是错误：

下面是我代码：

import { Link } from "react-router-dom";
import { Line } from "react-chartjs-2";
import {Chart as chartjs, Title, Tooltip, LineElement, Legend, CategoryScale, LinearScale, PointElement} from "chart.js";

chartjs.register(
  Title, Tooltip, LineElement, Legend, CategoryScale, LinearScale, PointElement
)

function BitCoin() {
  const [data, setData] = React.useState(null);
  const [dates, setDates] = React.useState(null);
  const [coinValue, setCoinValue] = React.useState(null);
  const [chartData, setChartData] = useState(null);

  React.useEffect(() => {
    fetch("http://localhost:3001/bitcoin")
      .then((res) => res.json())
      .then((data) => {
        const twoDimensionArr = data.message;
        setData(twoDimensionArr);
        setDates(twoDimensionArr.map(item => item[0]));
        setCoinValue(twoDimensionArr.map(item => item[1]));
        setChartData({
          labels: twoDimensionArr.map(item => item[0]),
          datasets: [{
            label: "value of BTC in ILS",
            data: twoDimensionArr.map(item => item[1]),
            backgroundColor: 'gold'
          }]
        })
      })
  }, []);

  return (
    <div style={{textAlign:"center", fontFamily:"Comic Sans MC", fontSize:"100"}}>
      THIS IS THE BitCoin PAGE

      <nav>
        <Link to="/"> Home </Link>
      </nav>

      <nav>
        <Link to="/coins"> Coins </Link>
      </nav>

      <Line
      data = {chartData}
      />

    </div>
  )
}

export default BitCoin;