Conversational Search: Getting count throws error on an ML enabled Index / Pipeline

Versions (relevant - OpenSearch/Dashboard/Server OS/Browser):
2.15 on AWS

Describe the issue:
I created an Index to test out Conversational Search. The conversational search query works fine. However, a regular count query does not:

Request:

GET my_rag_test_data2/_count

Response:

{
  "error": {
    "root_cause": [
      {
        "type": "null_pointer_exception",
        "reason": "Cannot invoke \"org.opensearch.searchpipelines.questionanswering.generative.ext.GenerativeQAParameters.getTimeout()\" because \"params\" is null"
      }
    ],
    "type": "null_pointer_exception",
    "reason": "Cannot invoke \"org.opensearch.searchpipelines.questionanswering.generative.ext.GenerativeQAParameters.getTimeout()\" because \"params\" is null"
  },
  "status": 500
}

Configuration:

Relevant Logs or Screenshots:

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