connect to the blockchain about solana-go-sdk HOT 9 CLOSED

Hey, I'm having difficulty getting the transaction to work and this is the error that I get;
    rpc response error: {"code":-32003,"message":"Transaction signature verification failure"}

    Please tell me what I'm doing wrong, I would appreciate it very much.
    
  
   // first I get the private and public keys from my API 
    public_key := user.MainWallet
private_key := data.PrivateKey

    // when I print the private and public keys they are correct
fmt.Println(public_key)
fmt.Println(private_key)

var userMakingTransaction, errAcc = types.AccountFromBase58(private_key)
if errAcc != nil {
	fmt.Println(errAcc, "      line 52")
}

var mintPubkey = common.PublicKeyFromString("Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB")
var from = common.PublicKeyFromString(public_key)
var privateKey = common.PublicKeyFromString(private_key)
var to = common.PublicKeyFromString("Gu1Lo6Ncb31hoRxPXjb98C7fLc3ubcYHUZ2yFBZGYiJ3")

c := client.NewClient(rpc.MainnetRPCEndpoint)

res, errNew := c.GetLatestBlockhash(context.Background())
if errNew != nil {
	log.Fatalf("get recent block hash error, err: %v\n", err)
}

fmt.Println(res.Blockhash)

tx, errTran := types.NewTransaction(types.NewTransactionParam{
	Message: types.NewMessage(types.NewMessageParam{
		FeePayer:        userMakingTransaction.PublicKey,
		RecentBlockhash: res.Blockhash,
		Instructions: []types.Instruction{
			tokenprog.TransferChecked(tokenprog.TransferCheckedParam{
				From:     from,
				To:       to,
				Mint:     mintPubkey,
				Auth:     userMakingTransaction.PublicKey,
				Signers:  []common.PublicKey{privateKey},
				Amount:   1,
				Decimals: 6,
			}),
		},
	}),
	Signers: []types.Account{userMakingTransaction, userMakingTransaction},
})

if errTran != nil {
	log.Fatalf("failed to new tx, err: %v", errTran)
}

txhash, errSend := c.SendTransaction(context.Background(), tx)

if errSend != nil {
	fmt.Println("       ", errSend)
	return
}

log.Println("txhash:", txhash)

fmt.Println(public_key)
fmt.Println(private_key)

var userMakingTransaction, errAcc = types.AccountFromBase58(private_key)
if errAcc != nil {
	fmt.Println(errAcc, "      line 52")
}

var mintPubkey = common.PublicKeyFromString("Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB")
var from = common.PublicKeyFromString(public_key)
//var privateKey = common.PublicKeyFromString(private_key)
//var to = common.PublicKeyFromString("8s5W5w6JUxTLLVpcEenNbHXAm2REUDgP6vz58F12EAPQ")
var to = common.PublicKeyFromString("Gu1Lo6Ncb31hoRxPXjb98C7fLc3ubcYHUZ2yFBZGYiJ3")

c := client.NewClient(rpc.MainnetRPCEndpoint)

res, errNew := c.GetLatestBlockhash(context.Background())
if errNew != nil {
	log.Fatalf("get recent block hash error, err: %v\n", err)
}

fmt.Println(res.Blockhash)

tx, errTran := types.NewTransaction(types.NewTransactionParam{
	Message: types.NewMessage(types.NewMessageParam{
		FeePayer:        userMakingTransaction.PublicKey,
		RecentBlockhash: res.Blockhash,
		Instructions: []types.Instruction{
			tokenprog.TransferChecked(tokenprog.TransferCheckedParam{
				From:     from,
				To:       to,
				Mint:     mintPubkey,
				Auth:     userMakingTransaction.PublicKey,
				Signers:  []common.PublicKey{},
				Amount:   1,
				Decimals: 6,
			}),
		},
	}),
	Signers: []types.Account{userMakingTransaction},
})

if errTran != nil {
	log.Fatalf("failed to new tx, err: %v", errTran)
}

txhash, errSend := c.SendTransaction(context.Background(), tx)

if errSend != nil {

	fmt.Println("       ", errSend)
	return
	//log.Fatalf("send raw tx error, err: %v\n", errSend)
}

log.Println("txhash:", txhash)