""" import styled from '@emotion/styled'; import React from 'react'; import { useDispatch } from 'react-redux'; const WillsTable = styled('div')(({ theme }) => ({ backgroundColor: theme.palette.background.paper, })); """ Property 'palette' does not exist on type 'Theme'. Solution: https://stackoverflow.com/a/72594201 Styled should be import from @mui/material/styles, as you can see here. So, the code will be like: import { styled } from "@mui/material/styles";