Amazon Q Business Chat always responds with "Sorry, I could not find relevant information to complete your request."

Hi, I have integrated Amazon Q Business with Service Now (dev instance) and indexed the incidents and the knowledgebase articles.

Here is the result of the sync jobs

"history": [
    {
        "executionId": "8d06cfb1-46dc-4510-877b-73f72aa485b8",
        "startTime": "2024-06-02T14:46:53.837000+02:00",
        "endTime": "2024-06-02T14:57:34.955000+02:00",
        "status": "INCOMPLETE",
        "error": {},
        "metrics": {
            "documentsAdded": "0",
            "documentsModified": "80",
            "documentsDeleted": "0",
            "documentsFailed": "12",
            "documentsScanned": "92"
        }
    },
    {
        "executionId": "5aa525a8-c735-4ebb-9338-a02c5a114729",
        "startTime": "2024-06-01T20:47:47.064000+02:00",
        "endTime": "2024-06-01T21:00:07.441000+02:00",
        "status": "SUCCEEDED",
        "error": {},
        "metrics": {
            "documentsAdded": "46",
            "documentsModified": "0",
            "documentsDeleted": "0",
            "documentsFailed": "0",
            "documentsScanned": "46"
        }
    {
        "executionId": "13db393f-0b70-49a2-b71f-74843cd5e9d6",
        "startTime": "2024-06-01T21:55:19.419000+02:00",
        "endTime": "2024-06-01T22:16:49.326000+02:00",
        "status": "SUCCEEDED",
        "error": {},
        "metrics": {
            "documentsAdded": "34",
            "documentsModified": "46",
            "documentsDeleted": "0",
            "documentsFailed": "0",
            "documentsScanned": "80"
        }
    },

The few docs that have not been indexed are images.

"documentDetailList": [
    {
        "documentId": "a9a16740c61122760004fe9095b7ddca",
        "status": "UPDATED",
        "error": {},
        "createdAt": "2024-06-01T20:53:31.039000+02:00",
        "updatedAt": "2024-06-02T14:53:53.187000+02:00"
    },
    {
        "documentId": "b45f80356f102100758ecb512e3ee485",
        "status": "DOCUMENT_FAILED_TO_INDEX",
        "error": {
            "errorMessage": "Failed to process the document. The document type (image/jpeg) is not supported, please save the document in a supported format and try again"
        },
        "createdAt": "2024-06-02T14:25:59.245000+02:00",
        "updatedAt": "2024-06-02T14:54:05.423000+02:00"
    },
    {
        "documentId": "471eb058a9fe198100f89592e1ea93d3",
        "status": "UPDATED",
        "error": {},
        "createdAt": "2024-06-01T20:53:30.798000+02:00",
        "updatedAt": "2024-06-02T14:53:38.209000+02:00"
    },

Now I open the web application and ask the chat some question related to knowledgebase articles in service now, however never able to get any information except this

Sorry, I could not find relevant information to complete your request.

What could I be doing wrong? And how can I have a look at the documents in the index?