npm install of private github hosted packages started failing

[tomaskallup]

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Hello, since yesterday our deployments have randomly started failing on npm install.

It always shows something like this:

npm ERR! code FETCH_ERROR
npm ERR! errno FETCH_ERROR
npm ERR! invalid json response body at https://npm.pkg.github.com/{ourPackage} reason: Unexpected token 't', ..."***,"devD:***"typescript"... is not valid JSON

It fails for different packages everytime and we have no idea what to do. I tried to fetch the package manually (providing my GH token) and the JSON seemed valid, so either it returns something different to our deployment (it happens on Google Cloud) or there might be a problem on GCloud side.

Has anyone ever run into a similar issue?