Hello Giancarlo, Did you deploy your app? Do you test it using the local server?
You seem to try using the local system in the app engine standard environment, which is not possible. This group is meant for general questions and voicing of opinions. For coding-related issues you are at an advantage if you post your questions on dedicated forums, such as stackoverflow, where competent and enthusiastic programmers are ready to help. -- 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/d0289406-dd07-40a4-84da-601bfdb5b6b7%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.