Steps to reproduce:

1. Go to "Latest Data"

Result:
Getting error

DateTime::__construct(): Failed to parse time string (@1647858170.7158928) at position 18 (8): Unexpected character 

Unixtimestamp in the error message represents current time.
Page will auto-reload itself, each time unixtimestamp in error message will change to current time.
After several self-refresh 'latest data' page will load in full, with filter fields on top and list of host/items/values in the bottom part. After another several self-refresh, it may fail to show list of hosts/items/values in bottom part of the page with the error message like above, while top part of the page with filters showing OK.

I've tried cleaning up browser cache, tried "incognito{}" mode in both FF and Chrome. Frontend behavior remained the same.

Expected
 working 'latest data' page without errors