Image based PDFs are not being processed by Document Processor Node. Error while processing

Summary:

We uploaded a PDF file in UCM and tried using document processor node to process it.

We are getting following error while processing

Node VM_DOC_PROCESSOR failed with error: Error occurred while invoking Generative ai inference client Error returned by Chat operation in GenerativeAiInference service.(500, 500, false) Internal Server Error. (opc-request-id: 758B33E9134F467C9C3253DB49F6C9FC/C615159DCAE8DF4A1B6CAB3B698C23D5/38BDE0C8BF4464BAFFCF633AD4CE1D22)
Timestamp: 2026-08-25T20:33:56.953Z
Client version: Oracle-JavaSDK/3.78.1
Request Endpoint: https://inference.generativeai.us-chicago-1.oci.oraclecloud.com/20231130/actions/chat
Additional Properties in error response: {}