First a little bit of backstory. About one month ago I was working on fetching top posts from this blog from Google Analytics and I encountered this pretty cryptic error.
Everything was working perfectly on local environment but on Travis CI and Netlify it was failing. After reading countless Stack Overflow questions and copy-pasting my API keys multiple times I stumbled on this issue comment.
The problem was that Netlify and Travis CI were escaping
\ in newline characters so they would look like this
Add this to your code.
const replace = require('lodash.replace')
const apiKey = replace(process.env.YOUR_API_KEY, new RegExp('\\\\n', 'g'), '\n')
Make sure to install lodash replace module.
yarn add lodash.replace
And don't forget to use your "escaped" key instead of original one for authentication.