I'm trying to deploy my react app to github pages but facing some errors.

At first, when I tried to run npm run deploy in the terminal, it showed me this error:

new MiniCssExtractPlugin({
 ^

And MiniCssExtractPlugin is not a constructor

After that, I tried: npm i -D --save-exact mini-css-extract-plugin@2.4.5 This solved the problem but when I ran it again (npm run deploy), I get this error:

Creating an optimized production build...
Failed to compile.

The target environment doesn't support dynamic import() syntax so it's not possible to use 
external type 'module' within a script

I don't know why it doesn't work, and also didn't find anything on the internet.

Thanks!