React is not defined?

*Tell us what’s happening:

I’m starting the React section of Front End Libraries and I can’t get past the first lesson. I only get “Uncaught ReferenceError: React is not defined” upon loading.
Tests will not pass even with verified correct solution. Have tried multiple browsers.

Your code so far

const JSX = <h1>Hello JSX!</h1>;

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.125 Safari/537.36.

Challenge: Create a Simple JSX Element

Link to the challenge:

Casey, you are not alone! It’s definitely an issue with FCC at the moment. I was doing React yesterday no prob.

Chrome error: Uncaught ReferenceError: React is not defined

Firefox error: ReferenceError: React is not defined

1 Like

I was just searching Twitter and saw a bunch of tweets mentioning the same problem back in January. I’ll hit up FCC on twitter and see if we can get things moving.

We are aware of the problem and have temporarily rolled back some recent changes. Everything should be working again.