I recommend deploying a Cloud Storage sample (like a HelloWorld <https://cloud.google.com/appengine/docs/flexible/php/using-cloud-storage> app), make sure everything works including permissions and gsutil commands, and then switch to your application.
Please note that Google Groups is for general product discussions and not for technical support. If you require further technical support for copying files from one place to another, it is recommended to post your full detailed question <https://stackoverflow.com/help/how-to-ask> to Stack Overflow <https://cloud.google.com/support/docs/stackexchange> using the supported Cloud tags <https://cloud.google.com/support/docs/stackexchange>. -- 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/a5339b9a-c67c-4a61-9932-984f89bb651d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
