import link as router link from 'react-router-dom' Reactjs

Hi Joseph it's possible to make the Link Component support the react router but you missed something,

import { Link as RouterLink } from 'react-router-dom';
import {
 Link,
 Typography,
} from '@material-ui/core';

then to the Link Component should be like this code below

<Typography variant="body2" align="center">
 <Link component={RouterLink} to="/login">Sign-in</Link><Link component={RouterLink} to="/signup"> or sign-up to see the list</Link>
</Typography>

just add component attribute and the value of this attr is the name of the imported class from the react-router-dom then use to="/route" instead of href

Good LUCK!