Today I Updated my Zimbra Server from version 7.1.2 to 7.1.3 without any errors.
My intention for upgrade zimbra is I am facing "External Account Sync Problem, Invalid end of line character" in web client for some mailboxes.
I think the Bug 67532 will be released in 7.1.4....? So I'm waiting for the next release.
Thanks Zimbra Team.