Gatsby, fix the "cannot find module gatsby-cli/lib/reporter" error
How I fixed a weird Error: Cannot find module gatsby-cli/lib/reporter error I got while creating a Gatsby site
I created a site using Gatsby and I ran gatsby develop to start a local server.
But a weird error showed up, coloring with red my terminal:

After a few searches across GitHub and StackOverflow (I found a lot of people with the same problem!) and this is what fixed the error.
First, I deleted node_modules:
rm -rf node_modules
then I used yarn instead of npm install:
yarn
This installed all the packages again.
Finally I ran gatsby develop and it worked.

Not sure what the cause problem is/was, but I tried again running npm install instead of yarn and it didn’t work.
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