I use:

**await metaplex.connection.sendTransaction(signedTxs)**

but have this error:

**transaction.serialize is not a function at StandardWalletAdapter.sendTransaction**

do you know how to fix it?

  • Could you share more code?
    – Jacob Creech
    Mar 23, 2023 at 3:02
  • What version of the metaplex sdk are you using? Can you share the code you are creating the signedTxs with?
    – nickfrosty
    Apr 21, 2023 at 13:59

1 Answer 1


Hey you could try this or https://solana-labs.github.io/solana-web3.js/classes/Transaction.html First one is the borsh serialize method

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