queryUtxo fails against 8.1.1-pre

[AndrewWestberg]

What Git revision / release tag are you using?

v5.6.0

Do you use any client SDK? If yes, which one?

Kogmios

Describe what the problem is?

query utxos fail against cardano-node 8.1.1-pre
node disconnects ogmios client.

What should be the expected behavior?

Successful query and response

If applicable, what are the logs from the server around the occurrence of the problem?

{"severity":"Info","timestamp":"2023-06-17T19:41:31.716378227Z","thread":"75","message":{"WebSocket":{"contents":{"agency":"ServerAgency TokConfirm","event":"receive","tag":"AcceptVersion","version":"\"NodeToClientV_13\""},"tag":"WebSocketClient"}},"version":"v5.6.0"}
{"severity":"Info","timestamp":"2023-06-17T19:41:32.987625839Z","thread":"93","message":{"WebSocket":{"contents":{"era":"Babbage","point":null,"query":{"utxo":[{"index":1,"txId":"0b4c56fdae7c23748c837e2443dfebebd020239c107aed9b227851ebabe4a829"},{"index":2,"txId":"0b4c56fdae7c23748c837e2443dfebebd020239c107aed9b227851ebabe4a829"},{"index":1,"txId":"892e397590da7601e4ccbe113d4d01017083f60cbb2d651f5fb722cee73b0b12"},{"index":2,"txId":"892e397590da7601e4ccbe113d4d01017083f60cbb2d651f5fb722cee73b0b12"},{"index":2,"txId":"35fc6dbcd0bfc2a48949db64e62fa7fc74b916a40b546d7b65bfc830e80035d7"},{"index":0,"txId":"017ea264b9aff5660ac646243cca08b4ddf178d61fbad0ec32e5bfde289eae0d"}]},"tag":"StateQueryRequest"},"tag":"WebSocketStateQuery"}},"version":"v5.6.0"}
{"severity":"Error","timestamp":"2023-06-17T19:41:33.989356407Z","thread":"70","message":{"WebSocket":{"exception":"MuxError MuxBearerClosed \"<socket: 18> closed when reading data, waiting on next header True\"","tag":"WebSocketUnknownException"}},"version":"v5.6.0"}
{"severity":"Info","timestamp":"2023-06-17T19:41:33.989465273Z","thread":"70","message":{"WebSocket":{"tag":"WebSocketConnectionEnded","userAgent":"Ktor client"}},"version":"v5.6.0"}