Error log `BulkIndexer client failure: flush: %!s(<nil>)` seems to be wrong

[rockdaboot]

With every 429 error from the bulk indexer, there are two error logs:

time="2022-12-21T13:58:34.995684095+01:00" level=error msg="BulkIndexer client failure: flush: %!s(<nil>)"
time="2022-12-21T13:58:34.995872760+01:00" level=error msg="BulkIndexer client failure: flush: [429 Too Many Requests] {\"error\":{\"root_cause\":[{\"type\":\"es_rejected_execution_exception\",\"reason\":\"rejected execution of coordinating operation [coordinating_and_primary_bytes=104759862, replica_bytes=0, all_bytes=104759862, coordinating_operation_bytes=20862272, max_coordinating_and_primary_bytes=107374182]\"}],\"type\":\"es_rejected_execution_exception\",\"reason\":\"rejected execution of coordinating operation [coordinating_and_primary_bytes=104759862, replica_bytes=0, all_bytes=104759862, coordinating_operation_bytes=20862272, max_coordinating_and_primary_bytes=107374182]\"},\"status\":429}"

The first one seems to plain wrong and is of no help. Can this be removed ?