Calendar and alarm not working after 14.4 update

After the 14.4 update, my iPhone calendar is not allowing me to add new events and my alarm is not allowing me to add new alarms! When I try to schedule a time and date it directly takes me out of the calendar! Same for alarm.
any idea of how to fix this?
I have the same problem for both calendar and alarm. Where you able to resolve this ?
Calendar and alarm not working after 14.4 update
 
 
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