GitHub user khalidhuseynov opened a pull request: https://github.com/apache/incubator-zeppelin/pull/891
[ZEPPELIN-853] Fix Last update at X by Y ### What is this PR for? This is a hotfix to solve https://issues.apache.org/jira/browse/ZEPPELIN-853. The reason seems to be that new `AuthenticationInfo` field added to paragraph structure doesn't exist in old notebooks and check for non-existence wasn't complete. ### What type of PR is it? Hot Fix ### Todos * [x] - fix `if statement` ### What is the Jira issue? [#853](https://issues.apache.org/jira/browse/ZEPPELIN-853) ### How should this be tested? Start zeppelin and go to any existing notebook, check console not to have stacktrace mentioned in the issue. ### Screenshots (if appropriate) Before:  After:  ### Questions: * Does the licenses files need update? No * Is there breaking changes for older versions? No * Does this needs documentation? No You can merge this pull request into a Git repository by running: $ git pull https://github.com/khalidhuseynov/incubator-zeppelin fix/last-updated-by-x-at-y Alternatively you can review and apply these changes as the patch at: https://github.com/apache/incubator-zeppelin/pull/891.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #891 ---- commit e53e4dfd95e953577ff66dd2a6437604d319babd Author: Khalid Huseynov <khalid...@nflabs.com> Date: 2016-05-16T12:37:38Z fix if statement ---- --- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---