TypeError is raised upon 'tg.check_type()' inner call inside the 'Scheduler.daily()' call

When the 'Scheduler.daily(*args)' method has been called, the inner 'tg.check_type("timing", timing, TimingDailyUnion)' call is occurred and the TypeError is raised: "check_type() takes 2 positional arguments but 3 were given".

Version: 0.8.3