我的是MacBook Pro，更新了MacOS Sierra 版本后，发现ITerm无法使用。
打开后显示如下：
Last login: Thu Sep 22 20:42:45 on ttys000
/Users/jgl/.oh-my-zsh/tools/check_for_upgrade.sh:3: failed to load module zsh/datetime': dlopen(/usr/lib/zsh/5.0.8/zsh/datetime.so, 9): image not found
_current_epoch:1: bad math expression: operand expected at / 60 / 60 ...'
/Users/jgl/.oh-my-zsh/lib/completion.zsh:11: failed to load module `zsh/zle': dlopen(/usr/lib/zsh/5.0.8/zsh/zle.so, 9): image not found