Starting on 2020-08-03 at 17:00 UTC and ending on 2020-08-07 some time after 18:00 UTC, the useragent struct in event.searchsatisfaction is NULL for all events, as seen in the output of the Hive query below. Given that it's populated at other times, I'd expect it to be for that time period too.
Query:
SELECT SUBSTR(meta.dt, 1, 13) AS log_time, count(*) AS num_events FROM event.searchsatisfaction WHERE year = 2020 AND month = 8 AND day >= 3 AND useragent IS NOT NULL GROUP BY SUBSTR(meta.dt, 1, 13) ORDER BY log_time LIMIT 250
Output:
log_time num_events NULL 613 2020-06-24T23 6 2020-08-03T00 888514 2020-08-03T01 871628 2020-08-03T02 857297 2020-08-03T03 780824 2020-08-03T04 742786 2020-08-03T05 743775 2020-08-03T06 839824 2020-08-03T07 981014 2020-08-03T08 1112431 2020-08-03T09 1194447 2020-08-03T10 1173086 2020-08-03T11 1254520 2020-08-03T12 1372443 2020-08-03T13 1517743 2020-08-03T14 1591469 2020-08-03T15 1582655 2020-08-03T16 1489345 2020-08-07T18 1295397 2020-08-07T19 1289413 Time taken: 64.221 seconds, Fetched: 21 row(s)
I also checked the event.homepagemodule table (which is a client-side EventLogging table), but did not find a gap there. So I suspect this is an issue with event.searchsatisfaction because it's an Event Platform table.