Handle zero logs
In the test-opensearch, there might be zero logs during the night.
Now the code fails when creating the daily file because of this. Handle KeyError (and log) when parsing hourly file and continue with next file.
In the test-opensearch, there might be zero logs during the night.
Now the code fails when creating the daily file because of this. Handle KeyError (and log) when parsing hourly file and continue with next file.