I'm trying to install plugins locally with add new > upload plugin. I get these errors ...
(1) With App Engine WP Plugin activated:
Fatal error: make_call(): Remote implementation for app_identity_service.GetAccessToken failed in C:\dev\google-cloud-sdk\platform\google_appengine\php\sdk\google\appengine\runtime\RealApiProxy.php on line 48
(2) With App Engine WP Plugin deactivated:
Unable to create directory wp-content/uploads/2017/03. Is its parent directory writable by the server?
(Note I have linked a service account to the storage bucket and given write permission)