'Helmet' cannot be used as a JSX component.

[mehmet sayin]

After cloning and installing dependencies with yarn, I face this error . Is there any way to fix it?

npm version: 8.5.0
node version: v16.14.2

'Helmet' cannot be used as a JSX component.
  Its instance type 'Helmet' is not a valid JSX element.
    The types returned by 'render()' are incompatible between these types.
      Type 'React.ReactNode' is not assignable to type 'import("/Users/sayinmehmet47/Desktop/projeler\u2705/bulletproof-react/node_modules/@testing-library/react-hooks/node_modules/@types/react/index").ReactNode'.
        Type '{}' is not assignable to type 'ReactNode'.  TS2786

     8 | export const Head = ({ title = '', description = '' }: HeadProps = {}) => {
     9 |   return (
  > 10 |     <Helmet
       |      ^
    11 |       title={title ? `${title} | Bulletproof React` : undefined}
    12 |       defaultTitle="Bulletproof React"
    13 |     >

[Keremcan Büyüktaşkın]

I had the same problem. I added those 2 "@types" lines to "resolutions" section at package.json.

"resolutions": { "babel-loader": "8.1.0", "@types/react": "17.0.2", "@types/react-dom": "17.0.2" },

I also deleted node_modules folder and yarn.lock file, and rerun yarn install command. Now "x is not a valid JSX element" errors are gone.

But still there are 3 files with TypeScript errors. I added // @ts-nocheck to the top of those files, after that finally the project opened on localhost. But registering a user is unsuccessful.

This project hasn't been updated for a long time, I guess it's not stable anymore.