Invalid memory address or nil pointer dereference error occurs in dao withdrawal transaction

Bug Report

Invalid memory address or nil pointer dereference error occurs in dao withdrawal transaction is reported

Current Behavior

Expected Behavior

I expect developer can use this dao withdraw example normal

Environment

CKB version: ckb v111

Chain: /
Operating system: MacOS 12.1
Arch: x64
Installation: /

Additional context/Screenshots

This bug can reproduced by these steps:


func Test_WithdrawDaoExample(t *testing.T) {
sender := "ckt1qzda0cr08m85hc8jlnfp3zer7xulejywt49kt2rr0vthywaa50xwsq2qf8keemy2p5uu0g0gn8cd4ju23s5269qk8rg4r"
depositOutPoint := &types.OutPoint{
    TxHash: types.HexToHash("0xebfb7bff39985865c20bd5b6c0190e58298eb9e4b1ddb9daee16166bed658c40"),
    Index:  0,
}

network := types.NetworkTest
client, err := rpc.Dial("https://testnet.ckb.dev")
if err != nil {
    return
}
iterator, err := collector.NewLiveCellIteratorFromAddress(client, sender)
if err != nil {
    return
}

// build transaction
builder, err := builder.NewDaoTransactionBuilder(network, iterator, depositOutPoint, client)
if err != nil {
    return
}
builder.FeeRate = 1000
if err := builder.AddWithdrawOutput(sender); err != nil {
    return
}
builder.AddChangeOutputByAddress(sender)

withdrawInfo, err := handler.NewWithdrawInfo(client, depositOutPoint)
if err != nil {
    return
}
txWithGroups, err := builder.Build(withdrawInfo)
if err != nil {
    return
}

// sign transaction
txSigner := signer.GetTransactionSignerInstance(network)
_, err = txSigner.SignTransactionByPrivateKeys(txWithGroups, "0x6c9ed03816e3111e49384b8d180174ad08e29feb1393ea1b51cef1c505d4e36a")
if err != nil {
    return
}

// send transaction
hash, err := client.SendTransaction(context.Background(), txWithGroups.TxView)
if err != nil {
    return
}
fmt.Println("transaction hash: " + hexutil.Encode(hash.Bytes()))
return
}

=== RUN Test_WithdrawDaoExample --- FAIL: Test_WithdrawDaoExample (1.31s) panic: runtime error: invalid memory address or nil pointer dereference [recovered] panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x8 pc=0x1002ec730]

goroutine 6 [running]: testing.tRunner.func1.2({0x100345c40, 0x100614e70}) /usr/local/go/src/testing/testing.go:1389 +0x24e testing.tRunner.func1() /usr/local/go/src/testing/testing.go:1392 +0x39f panic({0x100345c40, 0x100614e70}) /usr/local/go/src/runtime/panic.go:838 +0x207 github.com/nervosnetwork/ckb-sdk-go/v2/collector/builder.NewDaoTransactionBuilder(0x100433740?, {0x100434fe8?, 0xc000076660}, 0xc000024990, {0x1004379d0, 0xc000010088}) /Users/xueyanli/GolandProjects/ckb-sdk-go/collector/builder/dao.go:38 +0xd0 github.com/nervosnetwork/ckb-sdk-go/v2/collector/example.Test_WithdrawDaoExample(0x0?) /Users/xueyanli/GolandProjects/ckb-sdk-go/collector/example/example_test.go:321 +0x176 testing.tRunner(0xc000191a00, 0x1003d73a0) /usr/local/go/src/testing/testing.go:1439 +0x102 created by testing.(*T).Run /usr/local/go/src/testing/testing.go:1486 +0x35f

Process finished with the exit code 1

nervosnetwork / ckb-sdk-go