Metamask: The first argument must be a string, buffer, array buffer, array, or array-like object. Received type undefined in Trustwallet

Here’s an article addressing the issue:

Error in Confirming Transaction on Trust Wallet: “Received type undefined – in Trust wallet”

When attempting to confirm a transaction on a digital wallet, such as Trust Wallet, a user may encounter an error message that reads, “Received type undefined – in Trust wallet.” This error can be frustrating and require immediate attention.

The error occurs because the ConfirmTransaction function, which is used by the wallet to verify transactions, requires one of four specific data types for its arguments. However, it appears that the received type is not defined as one of these options.

Understanding the Data Types

To resolve this issue, let’s take a closer look at the required data types:

• String

  : A string is a sequence of characters that represents text.

• Buffer: A Buffer is an array-like object used to represent a buffer of bytes in memory.

• Array: An Array is an ordered collection of elements.

• Array-like Object (e.g., Uint8Array): An Array-like object, like Uint8Array, represents a raw byte array.

Possible Causes and Solutions

Based on the error message, it appears that the issue lies in how the wallet received the transaction data as an argument for the ConfirmTransaction function. Here are some potential causes and solutions:

• Invalid or missing argument: The wallet may not have provided one of the required data types (string, Buffer, Array) as its argument.

• Incorrect Buffer representation: If the received data is not in a valid Buffer format (e.g., it’s not a Uint8Array), the wallet may receive an incorrect value for the Transaction object.

To troubleshoot and resolve this issue:

• Verify that the transaction data being sent to the wallet has been correctly formatted as either a string, Buffer, Array, or Array-like Object.

• Check the wallet’s documentation to ensure it supports the required data types for confirming transactions.

• If possible, inspect the transaction data in detail to ensure its format is correct.

Example of Corrected Code

If you’re using the Trust Wallet API, here’s an updated example that demonstrates how to correctly pass a string as an argument:

const tx = {

  id: '1234567890',

  from: 'your_wallet_address',

  to: 'recipient_address',

  value: 10.00,

};


const confirmTransaction = await trustWallet.confirmTransaction(tx);


// Confirm transaction with the received data

In this example, we’ve assumed that tx is an object representing a transaction. The key values ​​are `id'',from'', andto''. We're also assuming that there's some other value for thevalue`.

By following these steps and verifying your wallet’s documentation, you should be able to resolve the “Received type undefined – in Trust wallet” error when attempting to confirm transactions on your digital wallet.