can't write to telegraf (inputs.influxdb_v2_listener) instead of influx

Hi
currently send metric from my java app via "influx java client library" to influxdb.
now need to send telegraf instead of influx , so add below parameter to telegraf.

[[inputs.influxdb_v2_listener]]
service_address = ":8086"

after reset telegraf got this error on my java app:
2023-10-17 09:11:34,731 ERROR [ApiWriter] Can not write to influx, writeApi is null!

here is the code:

import com.influxdb.client.*;
import com.influxdb.client.write.Point;

public void write(Point point) {
    if (writeApi == null) {
        LOGGER.error("Can not write to influx, writeApi is null!");
        return;

Any idea?
Thanks

Start with the Java entry point write(Point point) and the shown inputs.influxdb_v2_listener configuration. Check how the client creates writeApi and whether this listener accepts the client’s requests; done means a reproducible configuration and a confirmed write path or a documented incompatibility.