Fluentd not creating new index in elasticsearch

[mrenkine]

I have fluentd and elasticsearch running in containers.
Using elasticsearch plugin in fluentd to store logs in elasticsearch.
When I start the fluentd container it creates a new index in elasticsearch with a name like: 'fluentd-20220823'. So everyday it will create a new index and start storing logs in that daily index.
However when the new day starts the new index for the day is not created and logs are not being stored in elasticsearch.
If I restart the fluentd container, then the new index is created and logs are stored correctly until the end of the day.
Any ideas?