Database error: Connecting to database while navagating on front end

[led]

Hello everyone!

We started to face this problem some days ago.

while we are navigating on zabbix, sometimes, we got this error message: Database error: Connecting to database while navagating on front end. After it appears we click on retry button or refresh the page and it loads normally. we didn't find any log tha shows any error about it.
This error appears on grafana too

We started to get another error too, on web scenario, it started to return the message: Failed binding local connection end: bind failed with errno 98: Address already

We think that two situations are linked somehow.

Threse both situations started after we restarted the zabbix (4.0).

We update to version 4.0.6 and those error remains

Somebody already faced these situations?? Any tips? Exist a log that we can find the errors?

Thanks for the help!