theme.applyStyles is not a function

[15010133689]

Steps to reproduce

Link to live example: (required)

Steps:
1.I'm upgrading MUI from v5 to v6.1.1
2.Write a test page，for the example:AppBar position="static">test </AppBar

3.there is an error about AppBar element
theme.applyStyles is not a function

Current behavior

Internal error: TypeError: theme.applyStyles is not a function
at eval (./node_modules/@mui/material/AppBar/AppBar.js:136:30)
at eval (./node_modules/@mui/material/utils/memoTheme.js:20:21)
at processStyle (./node_modules/@mui/system/createStyled/createStyled.js:49:55)
at eval (./node_modules/@mui/system/createStyled/createStyled.js:162:25)
at handleInterpolation (./node_modules/@emotion/serialize/dist/emotion-serialize.development.esm.js:154:24)
at serializeStyles (./node_modules/@emotion/serialize/dist/emotion-serialize.development.esm.js:285:15)
at eval (./node_modules/@emotion/styled/base/dist/emotion-styled-base.development.esm.js:227:91)
at eval (./node_modules/@emotion/react/dist/emotion-element-ba80abe0.develop

Expected behavior

Display the test page normally

Context

No response

Your environment

"@mui/icons-material": "6.1.1",
"@mui/material": "6.1.1",
"@mui/material-nextjs": "6.1.1",
"@mui/material-pigment-css": "6.1.1",
"@material-ui/core": "^5.0.0-beta.5",
"@material-ui/icons": "^4.11.3",
Search keywords: theme.applyStyles is not a function

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[andreycmartins]

How did you solve it?

[15010133689]

"@material-ui/core": "^5.0.0-beta.5",Delete this reference. What I originally used in my code was import {createTheme, ThemeProvider} from "@material-ui/core";change this to import {createTheme, ThemeProvider} from "@mui/material";