Showing old events except new one

Your software
My Mautic version is: 3.0
My PHP version is: 7.3
My Database type and version is: mysql

Your problem
My problem is:
I am not able to see the new upcoming mails or events. i can see the activity log with new update things but the upcoming mails are not visible to me. is this a issue or a normal activity from mautic.
These errors are showing in the log:

Steps I have tried to fix the problem: