Celery beat won't start after changing date on computer?

Question

Django

After changing the date on the computer, Celery stopped running beat,

LocalTime -> 2019-05-17 13:50:45
Configuration ->
    . broker -> amqp://guest:**@localhost:5672//
    . loader -> celery.loaders.app.AppLoader
    . scheduler -> celery.beat.PersistentScheduler
    . db -> celerybeat-schedule
    . logfile -> [stderr]@%INFO
    . maxinterval -> 5.00 minutes (300s)
[2019-05-17 13:50:45,347: INFO/MainProcess] beat: Starting...

I'm on Ubuntu. Django project. It seems that he returned everything to its place, he still doesn’t like something.