'Getting ReferenceError: window is not defined in react, Next

I am developing a website in React. But I am getting ReferenceError: window is not defined in my _document.js

My Code as mention below:

import Document, { Html, Head, Main, NextScript } from 'next/document';

class MyDocument extends Document {
  static async getInitialProps(ctx) {
    const initialProps = await Document.getInitialProps(ctx);
    return { ...initialProps };
  }

  render() {
    return (
      <Html lang='en'>
        <Head>
          <link rel='icon' type='image/png' href='/images/favicon.png'></link>
        </Head>
        <body>
          <Main />
          <NextScript />
        </body>
      </Html>
    );
  }
}
export default MyDocument;

I am getting the error in below mentioned line

const initialProps = await Document.getInitialProps(ctx)

Anyone can tell me why I am getting this issue?



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