Unable to decode segwit blocks

[Newbitcoinerhere]

when we give segwit blocks for decoding. It decodes just the header. But the inputs and outputs remain 0. Example block {0000000000000000006ccd22f57e946189f5213ce49ef3fef43df46bfd0b6c86}. https://www.blockchain.com/explorer/blocks/btc/0000000000000000006ccd22f57e946189f5213ce49ef3fef43df46bfd0b6c86. Header and transaction count is decoded but the input details and output details come as 0. Tried many files post 1000. may its issue with the witness data??

Note: bitcoin core ccli can decode to json without any issues. So the local files are not corrupt.

Code:
var wholeBlock = streamReader.ReadBytes((int)blockMemoryStreamReader.BaseStream.Length);
var rawBlockHex = BitConverter.ToString(wholeBlock).Replace("-", "").ToLower();
byte[] rawData = NBitcoin.DataEncoders.Encoders.Hex.DecodeData(rawBlockHex);
NBitcoin.Block block = NBitcoin.Block.Load(rawData, Network.Main);