This error is usually resolved by installing/updating to the latest Node.js, npm and related libraries. You can follow some of the solutions discussed on this GitHub <https://github.com/Medium/phantomjs/issues/344> or this StackOverflow thread <https://stackoverflow.com/questions/26645207/npm-install-error-failed-at-the-phantomjs1-9-12-install-script> .
Posts like this is off-topic for Google Groups which is reserved for discussions of Google Cloud Platform's products and services. If you need further technical assistance, please consider posting on StackOverflow which we also monitor. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/984025fe-6688-4d59-bf47-6ad3d6e89e3e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.