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Can i know like if there is any documenatation for integrating this stream set with postman. I am getting 400 error, even thought adding headers, body etc.

Hello,I am currently facing a strange error. I am building a pipeline to keep my Tableau Personal Access Token (PAT) active, as Tableau's policy states that the PAT can expire after 14 days of inactivity. The purpose of this pipeline is to ensure that the PAT remains active. However, I received an error when I ran the pipeline.com.streamsets.pipeline.api.StageException: HTTP_32 - Error executing request. HTTP-Status: NULL Reason: java.net.ConnectException: Connection refusedAside from StreamSets, I was able to test the connection using the PAT token in Postman, and it worked fine. I tested a Python script that successfully authenticates with the Tableau API. The Tableau API appears to be working fine when I use it.As for the network, I don't use a proxy for StreamSets. Tableau Server doesn't have any traffic restrictions or any IP addresses on a blacklist. I'm wondering if it has something to do with the engine's configuration. 

Seeking a StreamSets specialist to build and optimize our data pipeline infrastructure - need assistance with pipeline design using Data Collector, real-time streaming from Kafka/databases to cloud warehouses, data transformation and validation rules, error handling and monitoring setup, Control Hub deployment for pipeline management, CDC implementation for database replication, API integrations with enterprise systems, and performance tuning for high-volume data processing. Requirements include proven StreamSets platform experience, knowledge of big data technologies and streaming architectures, understanding of data governance and lineage tracking, SQL and scripting skills for custom processors. Please demonstrate previous StreamSets implementations and data volume handled in your response.