cannot complete post initialization tasks: cannot update event names

[Jaani]

Hi,
I have done Zabbix upgrade from 3.4.15 to 4.0.50. Post the database upgrade I can see the following on zabbix_server.log
eted 55% of event name update
14874:20240428:014232.413 completed 56% of event name update
14874:20240428:014232.414 completed 57% of event name update
After that getting error like
17531:20240428:053440.444 event name update failed
17531:20240428:053440.445 cannot complete post initialization tasks: cannot update event names
Can someone plz help me about this issue.