InternalError returned from SQS

[zsy715]

We have batch job runs everyday to dump millions data from kinesis to lambda. In lambda, we send messages in batch to SQS for further process (10 per batch send). We sometimes see returned SQS response is like

Failed response: [
{
    "Id": "2",
    "SenderFault": false,
    "Code": "InternalError",
    "Message": ""
}
,
{
    "Id": "3",
    "SenderFault": false,
    "Code": "InternalError",
    "Message": ""
}
]

Is there any details about InternalError? Also is there any actions to mitigate the error? We have added retry logic but errors like this sometimes very scary.