protected FlinkKafkaInternalProducer<byte[], byte[]> createProducer() {
    return new FlinkKafkaInternalProducer<>(producerConfig);
  }
Errors encountered in the async producer are stored here.
amoro-format-mixed/amoro-mixed-flink/amoro-mixed-flink-common/src/main/java/org/apache/amoro/flink/write/hidden/kafka/HiddenKafkaProducer.java