pac-resolver@3.0.1' is not in the npm registry

[storralba-elsevier]

Since this morning when I try to run the tunnel I get this error message.

npm ERR! 404 Not Found - GET https://registry.npmjs.org/@crossbrowsertesting/pac-resolver/-/pac-resolver-3.0.1.tgz
npm ERR! 404
npm ERR! 404  '@crossbrowsertesting/pac-resolver@3.0.1' is not in the npm registry.
npm ERR! 404 You should bug the author to publish it (or use the name yourself!)
npm ERR! 404 It was specified as a dependency of 'cbt_tunnels'