[appengine-java] Unable to update app: null

I received the following error when I tried to deploy an application to google hosted appengine (GAE/J). Any idea what could have cause the problem? com.google.appengine.tools.admin.AdminException: Unable to update app: null at com.google.appengine.tools.admin.AppAdminImpl.update

[appengine-java] Re: Unable to update app: null

I solved my own problem. It turned out an empty url-pattern / in security-constraint web-resource-collection in my web.xml is causing this error. On Nov 19, 11:10 am, Leonard Siu leonard@gmail.com wrote: I received the following error when I tried to deploy an application to google hosted