Test Button on React lessons does not function properly

I noticed the 'Run the Tests" button does not work for me at least on this lesson:
Console Error:
Request to access cookie or storage on “https://unpkg.com/react-dom@16.4.0/umd/react-dom.production.min.js” was blocked because we are blocking all third-party storage access requests and content blocking is enabled. create-a-complex-jsx-element

When I added freecodecamp.org to my third-party cookies whitelist, I then received this error:

Loading failed for the with source “https://www.googletagmanager.com/gtag/js?id=AW-795617839”. create-a-complex-jsx-element:342:1

Loading failed for the with source “https://www.google-analytics.com/analytics.js”. create-a-complex-jsx-element:1:1

onmozfullscreenchange is deprecated. index.js:52:37

onmozfullscreenerror is deprecated. index.js:52:37

Unhandled promise rejection TypeError: “t[e] is undefined”

My DNS blocks googleanalytics but it appears that will crash the test function. Not sure if this is a personal problem or if it applies to other users.


We have just invalidated our CDN cache to fix this, can you all please try and check again? Here is a thread if you want to learn more: