Curator issue

Hi

I am using curator and trying to delete some of indices which are older than 30 days and I got following error message,Can someone help me ?

curator --config /u001/users/elasticsearch/curator.yml /u001/users/elasticsearch/delete_indices.yml
2019-07-25 16:49:29,249 INFO Preparing Action ID: 1, "delete_indices"
2019-07-25 16:49:29,365 INFO Trying Action ID: 1, "delete_indices": Delete indices older than 45 days (based on index name), for ingestion- prefixed indices. Ignore the error if the filter does not result in an actionable list of indices (ignore_empty_list) and exit cleanly.
2019-07-25 16:49:30,485 ERROR Failed to complete action: delete_indices. <class 'ValueError'>: Invalid epoch received, unable to convert None to int

Please share the YAML action file you are using. Paste it between triple back ticks, like this:

```
PASTE HERE
```