Transaction from buffer crashed

[kk-vv]

    let swapTransaction = "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"
    let data = Data(base64Encoded: swapTransaction)
    let transaction = try Transaction.from(data: data!)

[0xjorgev]

Hey there, I think I am having the same issue trying to execute a JUP swap, it looks like the data sent to the function is been nullified and crashes when trying to removeFirst() on the Message Object, I'd been trying to create an extension to expand of modify this function and latter add it over a pull request, but haven't been able to make it work.

[0xjorgev]

I was able to make this work, in my case by Using a VersionedTransaction instead of a Transaction, the code looks like this:

let rawData = Data(base64Encoded:"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")!
var versioned = try VersionedTransaction.deserialize(data: rawData)
try versioned.sign(signers: [account])
let configs = RequestConfiguration(encoding: "base64")!
let hash = try await solanaClient().apiClient.sendTransaction(transaction: versioned.serialize().base64EncodedString(), configs: configs)

Also take into account that this needs to be executed on Mainnet not Dev or Test net.

Hope this helps!