AWS Textract Connector issue in Mendix

I am getting below error when i am trying to connect from Mendix. Could you please let me know the exact reason.

Caused by: com.mendix.modules.microflowengine.MicroflowException: com.mendix.systemwideinterfaces.MendixRuntimeException: software.amazon.awssdk.core.exception.SdkClientException: Received an UnknownHostException when attempting to interact with a service. See cause for the exact endpoint that is failing to resolve. If this is happening on an endpoint that previously worked, there may be a network connectivity issue or your DNS cache could be storing endpoints for too long. at AmazonTextractConnector.AnalyzeDocument (JavaAction : 'AnalyzeDocument') at MyFirstModule.ACT_AnalyzeDocument (SubMicroflow : 'Analyze Document')