How to properly deserialize encoded transaction?

Question

// Sign the transaction
  const feePayer = USER_KEYPAIR;

  const deserializedTx = Transaction.from(Buffer.from(swapTransaction, 'base64'));
  deserializedTx.partialSign(feePayer);

  const txnSignature = await SOLANA_CONNECTION.sendRawTransaction(deserializedTx.serialize());

  console.log("Transaction Signature:", txnSignature);

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

Error: Versioned messages must be deserialized with VersionedMessage.deserialize()

Question: How to deserialize encoded transaction?

P.S. It works with other encoded transactions, but not with my. Example of the correct one:

AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAEDA+Z8BRyNDL30G+lsh0lwSNNhbnN6HAnoyUtyAiN7Pg+OUK2wQtYmX3uHnIO2htEANdTK9dP12UzWjFk+hpR4qAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAiOec80h+J5X8oUoZEmnxVj+E8V+0O4Nr9ly+Fu2D+8cBAgIAAQwCAAAAAOH1BQAAAAA=

Answer 1

According to the error, you are sending decoding a versioned message, ie, The version generally signifies the specifics of the layout of the message or instructions in it, if put in normal terms. And it tells you to use the VersionedMessage.decode(), but I don't think there is a function for it, as it is automatically handled, so my guess would be that there is some issue with the message serialization, or due to some dependency version incompatibility.