'Timeout on blocking read' when sending messages

[cristibozga]

We migrate from old azure servicebus sdk to the new one and we have a couple of of problems after the first deployment. Here's one of them:
We get several errors with the message:
...
Caused by: java.lang.IllegalStateException: Timeout on blocking read for 10400000000 NANOSECONDS
at reactor.core.publisher.BlockingSingleSubscriber.blockingGet(BlockingSingleSubscriber.java:123)
at reactor.core.publisher.Mono.block(Mono.java:1766)
at com.azure.messaging.servicebus.ServiceBusSenderClient.sendMessage(ServiceBusSenderClient.java:266)
....

One timestamp: "@timestamp":"2025-01-06T15:01:40.831Z"
queue: tos_trace_queue
namespace: sbus-nonprod-sprint-main-pextnk

Sdk version: 7.17.7
Java version: 17

Here's the setup of the sender: 
public ServiceBusSenderClient prepareSender(String queueName) {
        return new ServiceBusClientBuilder()
                .connectionString(....)
                .retryOptions(RETRY_OPTIONS)
                .sender()
                .queueName(queueName)
                .buildClient();

    }

RETRY_OPTIONS are created using this code:

    Long TIMEOUT = 2000L;
    AmqpRetryOptions RETRY_OPTIONS=prepareRetryOptions();

    ServiceBusSenderClient prepareSender(String entityName);


    static AmqpRetryOptions prepareRetryOptions() {
        AmqpRetryOptions retryOptions = new AmqpRetryOptions();
        retryOptions.setMode(AmqpRetryMode.FIXED);
        retryOptions.setTryTimeout(Duration.ofMillis(TIMEOUT));
        return retryOptions;
    }

Where from the 10400000000 NANOSECONDS timeout comes and how can we avoid it?

Thanks,
Cristi