Error using useEffect in react functional component

Question

I am learning to use react hooks to manage state but I get the error saying Line 5:3: React Hook "useEffect" is called in function "cockpit" which is neither a React function component or a custom React Hook function react-hooks/rules-of-hooks

here is my code

import React, {useEffect} from "react";
import classes from "./Cockpit.module.css";

const cockpit = (props) => {
  useEffect(() => {
    console.log('Cockpit js useEffect');

  });

  const assiginedClasses = [];
  let btnClass = "";
  if (props.showPersons) {
    btnClass = classes.Red;
  }

  if (props.persons.length <= 2) {
    assiginedClasses.push(classes.red);
  }

  if (props.persons.length <= 1) {
    assiginedClasses.push(classes.bold);
  }
  return (
    <div className={classes.Cockpit}>
      <h1>Hi I'm a React App</h1>
      <p className={assiginedClasses.join(" ")}>This is really Working!</p>
      <button className={btnClass} onClick={props.clicked}>
        Toggle Name
      </button>
    </div>
  );
};

export default cockpit;

Answer 1

Below line changed after remove error solved. This code is work. 1. const cockpit = (props) => { 2. export default cockpit;

Replace below Line 1. const Cockpit = (props) => { 2. export default Cockpit;