Arduino compile error on Time

[cohen-sydney]

any one get this error or know what to do about it??

In file included from /Users/andrew/Documents/Arduino/M5PaperProjects/M5PaperWeather-master/weather/Weather.h:26,
from /Users/andrew/Documents/Arduino/M5PaperProjects/M5PaperWeather-master/weather/Data.h:24,
from /Users/andrew/Documents/Arduino/M5PaperProjects/M5PaperWeather-master/weather/weather.ino:26:
/Users/andrew/Documents/Arduino/M5PaperProjects/M5PaperWeather-master/weather/Utils.h: In function 'time_t GetRTCTime()':
/Users/andrew/Documents/Arduino/M5PaperProjects/M5PaperWeather-master/weather/Utils.h:46:3: error: 'tmElements_t' was not declared in this scope
tmElements_t tmSet;