você não postou seu component Main! stackblitz: [https://stackblitz.com/edit/react-ib1f3e?file=src%2Fpages%2Fcategory.js](https://stackblitz.com/edit/react-ib1f3e?file=src%2Fpages%2Fcategory.js) App.js ``` import React from "react"; import "./style.css"; import Routes from "./routes"; import Header from "./components/Header"; function App() { return (

); } export default App; routes.js import React from "react"; import { BrowserRouter, Switch, Route } from "react-router-dom"; import Main from "./pages/main"; import Product from "./pages/product"; import Categories from "./pages/category"; const Routes = () => ( ); export default Routes; main.js import React from "react"; import { Link } from "react-router-dom"; export default function Main() { return ( <>

Main

Products
Categorias

); } product.js import React, { Component } from "react"; import { Link } from "react-router-dom"; ``` export default class Product extends Component { render() { ``` return ( <>

Product

Home

); } } category.js import React from "react"; import { Link } from "react-router-dom"; export default function Categories() { return ( <>

React-router

Erro Rota com React