how to get source log when happend error

[ColdV]

vector error output:
2023-06-26T08:15:42.283420Z ERROR sink{component_kind="sink" component_id=loki component_type=loki component_name=loki}:request{request_id=1}: vector::sinks::util::retries: Non-retriable error; dropping the request. error=Server responded with an error: 400 Bad Request internal_log_rate_limit=true
2023-06-26T08:15:42.300682Z ERROR sink{component_kind="sink" component_id=loki component_type=loki component_name=loki}:request{request_id=1}: vector_common::internal_event::service: Service call failed. No retries or retries exhausted. error=Some(ServerError { code: 400 }) request_id=1 error_type="request_failed" stage="sending" internal_log_rate_limit=true
2023-06-26T08:15:42.300744Z ERROR sink{component_kind="sink" component_id=loki component_type=loki component_name=loki}:request{request_id=1}: vector_common::internal_event::component_events_dropped: Events dropped intentional=false count=2211 reason="Service call failed. No retries or retries exhausted." internal_log_rate_limit=true

now, i want get the source log before drop. What should I do

[jszwedko]

Hi @ColdV !

Unfortunately this isn't possible at the moment, but would be enabled by #1772. Are there more log messages prior to these ones that indicate the error? The ones you shared are just about retries.