Cannot get/ heroku

Home

I uploaded my project to heroku and at first it seemed like everything worked out, the home page loads normal but when I try to access the following pages it just gives me a Cannot get/

/alunos

const Routes: React.FC = () => {
    return(
        <Switch>
            <Route path='/' exact component={Home} />
            <Route path='/alunos' exact component={Alunos} />
            <Route path='/cadastro_aluno' exact component={AlunosForm} />
            <Route path='/tarefas_cadastro/:id' exact component={AlunosForm} />
            <Route path='/alunos/:id' exact component={AlunosDetail} />
            <Route path='/loc' exact component={AlunosLoc} />
        </Switch>
    );
}

export default Routes;

server.js

const express = require('express')
const app = express()
const PORT = process.env.PORT || 3102
 
app.use(express.static('build'))
app.listen(PORT, () => console.log('Servidor Front em execução!'))

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