Improve error message when using create-next-app

[mozeryansky]

Bug report

Describe the bug

Running npx create-next-app --example with-mongodb with-mongodb produces the error:
"Could not locate an example named "with-mongodb". Please check your spelling and try again."

Even though the example is here:
https://github.com/vercel/next.js/tree/canary/examples/with-mongodb

To Reproduce

^

Expected behavior

Create example

Screenshots

If applicable, add screenshots to help explain your problem.

System information

• OS: macOS
• Version of Next.js: npx
• Version of Node.js: v12.18.3

[timneutkens]

Just tried to reproduce this but the example was correctly downloaded 🤔 Maybe GitHub was down at the time?

[mozeryansky]

I see that if the url failed it will just print this error message. Can it use the caught error to print a more descriptive error instead of ignoring the exception being caught?

Here:
https://github.com/vercel/next.js/blob/canary/packages/create-next-app/helpers/examples.ts#L17

[timneutkens]

Definitely! Feel free to send a PR 👍

[Abhishek-Srivas]

Hello @timneutkens I wanted to solve this issue. I am new to open source, but really wanted to know the community and help the project grow. So can you guide me with the issue and what behavior you want and you are not getting.

[victorWeiFreelancer]

hello, I can easily see the same error when purposely disconnect from internet. I can help enrich the error message to mention internet connection in

next.js/packages/create-next-app/create-app.ts

Line 89 in f06c589

)}. Please check your spelling and try again.`

Can I work on it with a PR?