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Error: TypeError: dispatcher is null #564

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nakasyou opened this issue Aug 8, 2023 · 0 comments
Open

Error: TypeError: dispatcher is null #564

nakasyou opened this issue Aug 8, 2023 · 0 comments

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@nakasyou
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nakasyou commented Aug 8, 2023 •
edited

If I use useState(), Aleph.js throws this error at browser when Aleph.js in Develop mode.

At the same time, the following error message appears:

Warning: Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons:
1. You might have mismatching versions of React and the renderer (such as React DOM)
2. You might be breaking the Rules of Hooks
3. You might have more than one copy of React in the same app
See https://reactjs.org/link/invalid-hook-call for tips about how to debug and fix this problem.

and

Uncaught Error: Minified React error #423; visit https://reactjs.org/docs/error-decoder.html?invariant=423 for the full message or use the non-minified dev environment for full errors and additional helpful warnings.

Minimal sample code:

//  routes/index.tsx
import { Head } from "aleph/react"
import { useState } from "react"
export default function Home() {
  const [x, setX] = useState("a")
  return (
    <>
      <Head>
        <title>Page</title>
      </Head>
      <div>
        hello world!!
      </div>
    </>
  );
}
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@nakasyou