Error in launching "npm run dev

[master-cipher]

[doctorinvest]

I keep having the same issue even after using the modified package.json file. Who can I call or email to fix the issue since< i paid for the course an I really am getting frustrated with this stumping my progress.

[MichaelRichens]

Just ran into this problem, and found something saying that webpack had renamed contentBase to static
webpack/webpack-dev-server#2958 (comment)

Making the change in the webpack.config.js file fixed the error for me.

[tkline615]

Ran into this issue as well. Changing the contentBase to static in the webpack.config.js file worked for me as well:

webpack/webpack-dev-server#2958 (comment)

[amanda-delongchamp]

I was getting an error: "export 'ReactDOM' (imported as 'ReactDOM') was not found in 'react-dom/client' (possible exports: createRoot, hydrateRoot)"

I resolved by changing this by doing two things:

1. I change the following statement in Main.js from
   import { ReactDOM } from "react-dom/client";

to

import ReactDOM from "react-dom/client;

so just basically removing the curly brackets from the import statement.

2. I commented out the following statement in Main.js:
   import { func } from "prop-types";