快速帮助！当我试图将数据渲染到react表中时，我得到了上面的错误。数据通过axios来自一个API。
下面是代码

import axios from "axios";
import React, { useEffect, useState, useMemo } from "react";
import "./Modal.css";
import { useTable } from "react-table";
import { COLUMNS } from "./columns";
import "./my_style.css";
const ViewTcMapping = () => {
  const [data, setData] = useState({});

  const baseURL =
    "http://127.0.0.1:8000/api/business_process/risk_tc_mapping_details";

  useEffect(() => {
    axios
      .get(baseURL)
      .then((response) => {
        setData(response.data);
      })
      .then(
        (response) => {},
        (err) => {
          alert("No Data To Show");
        }
      )
      .catch((err) => {
        return false;
      });
  }, []);

  const columns = useMemo(() => COLUMNS, []);
  const mydata = useMemo(() => data, []);
  const tableInstance = useTable({
    columns,
    mydata,
  });

  const {
    getTableProps,
    getTableBodyProps,
    headerGroups,
    rows,
    prepareRow,
  } = tableInstance;
  return (
    <div className="z-100 flex justify-center items-center">
      <div className="text-black">
        <div className="rounded overflow-hidden flex  justify-center items-center">
          <table {...getTableProps()} class="GeneratedTable">
            <thead>
              {headerGroups.map((headerGroup) => (
                <tr {...headerGroup.getHeaderGroupProps()}>
                  {headerGroup.headers.map((column) => (
                    <th {...column.getHeaderGroupProps()}>
                      {column.render("Header")}
                    </th>
                  ))}
                </tr>
              ))}
            </thead>

            <tbody {...getTableBodyProps()}>
              {rows.map((row) => {
                prepareRow(row);
                return (
                  <tr {...row.getRowProps}>
                    {row.cells.map((cell) => {
                      return (
                        <td {...cell.getCellProps()}>{cell.render("Cell")}</td>
                      );
                    })}
                  </tr>
                );
              })}
            </tbody>
          </table>
        </div>
      </div>
    </div>
  );
};

export default ViewTcMapping;

下面是COLUMNS，它包含每列的标题

export const COLUMNS = [
  {
    Header: "Cost",
    accessor: "cost_category",
  },
  {
    Header: "Path",
    accessor: "path",
  },
  {
    Header: "Threat Category (PK)",
    accessor: "threat_category",
  },
  {
    Header: "Threats (ISO)",
    accessor: "threats",
  },
  {
    Header: "Asset Type",
    accessor: "asset_type",
  },
  {
    Header: "Comment",
    accessor: "comment",
  },
  {
    Header: "Operational",
    accessor: "operational",
  },
  {
    Header: "Reputational",
    accessor: "reputational",
  },
  {
    Header: "Financial",
    accessor: "financial",
  },
  {
    Header: "Health and Safety",
    accessor: "health_and_safety",
  },
  {
    Header: "Environmental",
    accessor: "environment",
  },
];

下面是我想要呈现到表中的API数据

{
    "tc_mapping_details": [
        {
            "cost_category": "Malicious Attacks",
            "path": "Entry",
            "threat_category": "Phishing",
            "threats": "Social engineering",
            "asset_type": "User",
            "comment": "Phishing by itself may not cause a breach, unless it is in combination with middle and end activities. Loss event (Breach) is calculated per exposed path that leads to the end action. For the rest, loss can be treated merely as an incident",
            "operational": "I",
            "reputational": null,
            "financial": null,
            "health_and_safety": null,
            "environment": null
        },
        {
            "cost_category": "Malicious Attacks",
            "path": "Middle",
            "threat_category": "Ransom-ware",
            "threats": "Malicious code",
            "asset_type": "Email Properties",
            "comment": "Ransomware can't launch on it own. It needs an Entry point. It needs an End point for Extortion or Breach (For example, Data Tampering or Data Compromise resp,)..",
            "operational": "I",
            "reputational": "I",
            "financial": "I",
            "health_and_safety": null,
            "environment": null
        },
        {
            "cost_category": "Malicious Attacks",
            "path": "Middle",
            "threat_category": "Malicious Software (Malware, Virus etc.)",
            "threats": "Malicious code",
            "asset_type": "Server, Network",
            "comment": "Ransomware can't launch on it own. It needs an Entry point. It needs an End point for an Attack or Breach (For example, Data Tampering or Data Compromise resp,)..",
            "operational": "I",
            "reputational": null,
            "financial": null,
            "health_and_safety": null,
            "environment": null
        },
        {
            "cost_category": "Malicious Attacks",
            "path": "Middle",
            "threat_category": "Espionage",
            "threats": "Software espionage",
            "asset_type": null,
            "comment": null,
            "operational": "I",
            "reputational": null,
            "financial": "I",
            "health_and_safety": null,
            "environment": null
        },
        {
            "cost_category": "Malicious Attacks",
            "path": "Middle",
            "threat_category": "Espionage",
            "threats": "Industrial espionage",
            "asset_type": null,
            "comment": null,
            "operational": "I",
            "reputational": "I",
            "financial": "I",
            "health_and_safety": "I",
            "environment": "I"
        },
        {
            "cost_category": "Malicious Attacks",
            "path": "Entry",
            "threat_category": "Web Vulnerabilities",
            "threats": "Vulnerability",
            "asset_type": "Web Properties",
            "comment": null,
            "operational": "I",
            "reputational": null,
            "financial": "I",
            "health_and_safety": null,
            "environment": null
        },
        {
            "cost_category": "Malicious Attacks",
            "path": "Entry",
            "threat_category": "3rd Party Vulnerabilities (inc. Software)",
            "threats": "Vulnerability",
            "asset_type": null,
            "comment": null,
            "operational": "I",
            "reputational": "I",
            "financial": "I",
            "health_and_safety": null,
            "environment": null
        },
        {
            "cost_category": "Malicious Attacks",
            "path": "End",
            "threat_category": "Fraud",
            "threats": "Fraud",
            "asset_type": null,
            "comment": null,
            "operational": "B",
            "reputational": "B",
            "financial": "B",
            "health_and_safety": null,
            "environment": null
        },
       
    ]
}

如何修复 TypeError：无法读取未定义的属性（阅读“forEach”）？
谢谢