Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript React Basics First Steps in React Embed JavaScript Expressions in JSX

[Violation] 'readystatechange' handler took 292ms

Chrome is giving me the above error. Is this normal in production? And will this disappear when we go into production?

1 Answer

Brendan Whiting
.a{fill-rule:evenodd;}techdegree seal-36
Brendan Whiting
Front End Web Development Techdegree Graduate 84,697 Points

I haven't encountered this in the wild. But I found a StackOverflow answer that links to a tweet that links to a google group...

Are you seeing this warning when you're running your app with npm start or when you're run npm build?

Thanks for the replay. That's the same page I got when I googled, but it doesn't say much. I have node and npm, but not working with it for this project.