XMPP在Xcode9报错:Static_assert fail

xcode9 编译时 CocoaLumberjack 出现Static_assert failed "format argument must be a string constant ， 代码行 os_log_error(OS_LOG_DEFAULT, "%{public}s", msg);

附图:

报错图.png

解决方案:更新 CocoaLumberjack

(命令:)
pod update CocoaLumberjack