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.
npm ERR! Callback called more than once.
I get this error (npm ERR! Callback called more than once.) from GitBash when I try to run a command:
.. to get a package.json file in the root of my project.
Tried googling for an answer, had zero luck at solving.
Jennifer NordellTreehouse Teacher
Hi there! This is an unusual one and I've personally never run into it, but I've been reading around and may or may not have a solution. When you type
npm config ls -l you should get a long list of default configuration entries. Look for the one labeled "registry". It should say either:
"http://registry.npmjs.org/". Note that one uses https (secure http) and the other uses normal http. This could be causing your error. You can use
npm config set registry http://registry.npmjs.org/ or
npm config set registry https://registry.npmjs.org/ to change it to the other one. For example, if you're currently using http, try changing it to https and vice versa.
Hope this helps!