Cannot read property 'getState' of undefined 에러 어떻게 해결하나요...ㅠㅠ

TypeError: Cannot read property 'getState' of undefined
    at C:\Users\MiRcomputer\Documents\GitHub\react-nodebird\front\node_modules\react-redux\lib\components\Provider.js:31:18
    at Object.useMemo (C:\Users\MiRcomputer\Documents\GitHub\react-nodebird\front\node_modules\react-dom\cjs\react-dom-server.node.development.js:1239:19)
    at useMemo (C:\Users\MiRcomputer\Documents\GitHub\react-nodebird\front\node_modules\react\cjs\react.development.js:1521:21)
    at Provider (C:\Users\MiRcomputer\Documents\GitHub\react-nodebird\front\node_modules\react-redux\lib\components\Provider.js:30:42)
    at processChild (C:\Users\MiRcomputer\Documents\GitHub\react-nodebird\front\node_modules\react-dom\cjs\react-dom-server.node.development.js:3043:14)
    at resolve (C:\Users\MiRcomputer\Documents\GitHub\react-nodebird\front\node_modules\react-dom\cjs\react-dom-server.node.development.js:2960:5)
    at ReactDOMServerRenderer.render (C:\Users\MiRcomputer\Documents\GitHub\react-nodebird\front\node_modules\react-dom\cjs\react-dom-server.node.development.js:3435:22)
    at ReactDOMServerRenderer.read (C:\Users\MiRcomputer\Documents\GitHub\react-nodebird\front\node_modules\react-dom\cjs\react-dom-server.node.development.js:3373:29)
    at renderToString (C:\Users\MiRcomputer\Documents\GitHub\react-nodebird\front\node_modules\react-dom\cjs\react-dom-server.node.development.js:3988:27)
    at render (C:\Users\MiRcomputer\Documents\GitHub\react-nodebird\front\node_modules\next\dist\next-server\server\render.js:83:16)
    at Object.renderPage (C:\Users\MiRcomputer\Documents\GitHub\react-nodebird\front\node_modules\next\dist\next-server\server\render.js:419:16)
    at Function.getInitialProps (C:\Users\MiRcomputer\Documents\GitHub\react-nodebird\front\.next\server\static\development\pages\_document.js:293:19)
    at Object.loadGetInitialProps (C:\Users\MiRcomputer\Documents\GitHub\react-nodebird\front\node_modules\next\dist\next-server\lib\utils.js:59:29)
    at Object.renderToHTML (C:\Users\MiRcomputer\Documents\GitHub\react-nodebird\front\node_modules\next\dist\next-server\server\render.js:423:36)
    at async DevServer.renderToHTMLWithComponents (C:\Users\MiRcomputer\Documents\GitHub\react-nodebird\front\node_modules\next\dist\next-server\server\next-server.js:651:26)
    at async DevServer.renderToHTML (C:\Users\MiRcomputer\Documents\GitHub\react-nodebird\front\node_modules\next\dist\next-server\server\next-server.js:798:28)


구글링 해봐도 답을 못찾겠어서 질문 드려요....
어디가 잘못됐는지 도통 모르겠네요 .. ㅠ

https://github.com/pym7857/react-nodebird/tree/master/front

3-4 장 까지 코드는 모두 깃허브에 올렸습니다..

어디가 잘못됐을까요 제로초님... ㅠㅠㅠㅠㅠㅠㅠ