React UseTable: TypeError: Cannot read properties of undefined (reading 'forEach')

Quick help here! I got the above error when i try to render data into react table. The data come from an api via axios.

Here is the code

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;

Here is COLUMNS which contains the heading of each column

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",
  },
];

Here is the api json data I wanted to render to the table

{
    "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
        },
       
    ]
}

How can I fix TypeError: Cannot read properties of undefined (reading 'forEach') ?

Thanks

I found solution for you. I just encountered the same problems.

In the useTable hooks, you have to pass useTable({ columns, data: 'yourData' }) since the accessRows forEach is for keyword data.