Again…I keep forgetting this…
Option 1: Importing directly from MUI library
yarn add @material-ui/icons
Go here: https://material-ui.com/components/material-icons/
Click or search for icons
Import like so on a React file:
import ErrorIcon from '@material-ui/icons/Error';
If you want to customize it further…
import ErrorIcon from '@material-ui/icons/Error'