# How to deploy a contract in testnet using RUST-SDK?

**URL:** <https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801>\
**Category:** Rust SDK\
**Created:** [December 15, 2022, 12:49pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801 "2022-12-15T12:49:35Z")\
**Posts on this page:** 20\
**Page:** 1

<div class="post-metadata">

**Author:** ![fuel](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/fuel/32/1677_2.png) [@fuel](https://forum.fuel.network/u/fuel)\
**Post date:** [December 15, 2022, 12:49pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/1 "2022-12-15T12:49:35Z")

</div>

Hi there 👋  
Trying to deploy my dapp in testnet using next test, but have an error

**Test:**

```auto
use dotenv::dotenv;
use fuels::prelude::*;

const RPC: &str = "https://node-beta-2.fuel.network/graphql";

#[tokio::test]
async fn deploy_token_contract() {
    let provider = match Provider::connect(RPC).await {
        Ok(p) => p,
        Err(error) => panic!("❌ Problem creating provider: {:#?}", error),
    };

    dotenv().ok();
    let secret = match std::env::var("SECRET") {
        Ok(s) => s,
        Err(error) => panic!("❌ Cannot find .env file: {:#?}", error),
    };

    let wallet = WalletUnlocked::new_from_private_key(secret.parse().unwrap(), Some(provider));

    let token_contract_id = Contract::deploy(
        "out/debug/token_contract.bin",
        &wallet,
        TxParameters::default(),
        StorageConfiguration::with_storage_path(Some(
            "./out/debug/token_contract-storage_slots.json".to_string(),
        )),
    )
    .await;
    let token_contract_id = match token_contract_id {
        Ok(id) => id,
        Err(error) => panic!("❌ Problem deploing the dapp: {:#?}", error),
    };

    println!("✅ Contract deployed @ {token_contract_id}");
}

```

**Error:**

```auto
   Compiling tests v0.0.0 (/Users/alexey/projects/fuel-token-standard/token_contract)
    Finished test [unoptimized + debuginfo] target(s) in 2.71s
     Running tests/harness.rs (target/debug/deps/tests-ebb925acf86f95a5)

running 1 test
thread 'actions::deploy_token_contract::deploy_token_contract' panicked at '❌ Problem deploing the dapp: ProviderError(
    "Response errors; Unknown field \"consensus\" on type \"Block\".; Unknown type \"Genesis\"; Unknown type \"PoAConsensus\"",
)', tests/actions/deploy_token_contract.rs:32:23
stack backtrace:
   0: rust_begin_unwind
             at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/panicking.rs:584:5
   1: core::panicking::panic_fmt
             at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/panicking.rs:142:14
   2: tests::actions::deploy_token_contract::deploy_token_contract::{{closure}}
             at ./tests/actions/deploy_token_contract.rs:32:23
   3: <core::future::from_generator::GenFuture<T> as core::future::future::Future>::poll
             at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/future/mod.rs:91:19
   4: <core::pin::Pin<P> as core::future::future::Future>::poll
             at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/future/future.rs:124:9
   5: <core::pin::Pin<P> as core::future::future::Future>::poll
             at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/future/future.rs:124:9
   6: tokio::runtime::scheduler::current_thread::CoreGuard::block_on::{{closure}}::{{closure}}::{{closure}}
             at /Users/alexey/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-1.23.0/src/runtime/scheduler/current_thread.rs:541:57
   7: tokio::runtime::coop::with_budget
             at /Users/alexey/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-1.23.0/src/runtime/coop.rs:102:5
   8: tokio::runtime::coop::budget
             at /Users/alexey/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-1.23.0/src/runtime/coop.rs:68:5
   9: tokio::runtime::scheduler::current_thread::CoreGuard::block_on::{{closure}}::{{closure}}
             at /Users/alexey/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-1.23.0/src/runtime/scheduler/current_thread.rs:541:25
  10: tokio::runtime::scheduler::current_thread::Context::enter
             at /Users/alexey/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-1.23.0/src/runtime/scheduler/current_thread.rs:350:19
  11: tokio::runtime::scheduler::current_thread::CoreGuard::block_on::{{closure}}
             at /Users/alexey/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-1.23.0/src/runtime/scheduler/current_thread.rs:540:36
  12: tokio::runtime::scheduler::current_thread::CoreGuard::enter::{{closure}}
             at /Users/alexey/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-1.23.0/src/runtime/scheduler/current_thread.rs:615:57
  13: tokio::macros::scoped_tls::ScopedKey<T>::set
             at /Users/alexey/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-1.23.0/src/macros/scoped_tls.rs:61:9
  14: tokio::runtime::scheduler::current_thread::CoreGuard::enter
             at /Users/alexey/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-1.23.0/src/runtime/scheduler/current_thread.rs:615:27
  15: tokio::runtime::scheduler::current_thread::CoreGuard::block_on
             at /Users/alexey/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-1.23.0/src/runtime/scheduler/current_thread.rs:530:19
  16: tokio::runtime::scheduler::current_thread::CurrentThread::block_on
             at /Users/alexey/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-1.23.0/src/runtime/scheduler/current_thread.rs:154:24
  17: tokio::runtime::runtime::Runtime::block_on
             at /Users/alexey/.cargo/registry/src/github.com-1ecc6299db9ec823/tokio-1.23.0/src/runtime/runtime.rs:282:47
  18: tests::actions::deploy_token_contract::deploy_token_contract
             at ./tests/actions/deploy_token_contract.rs:35:5
  19: tests::actions::deploy_token_contract::deploy_token_contract::{{closure}}
             at ./tests/actions/deploy_token_contract.rs:7:7
  20: core::ops::function::FnOnce::call_once
             at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/ops/function.rs:248:5
  21: core::ops::function::FnOnce::call_once
             at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/ops/function.rs:248:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
test actions::deploy_token_contract::deploy_token_contract ... FAILED

failures:

failures:
    actions::deploy_token_contract::deploy_token_contract

test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 4 filtered out; finished in 0.76s

error: test failed, to rerun pass '-p tests --test tests'

```

---

<div class="post-metadata">

**Author:** ![fuel](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/fuel/32/1677_2.png) [@fuel](https://forum.fuel.network/u/fuel)\
**Post date:** [December 15, 2022, 12:59pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/2 "2022-12-15T12:59:12Z")

</div>

I have the same issue when I use RPC url like

- [https://node-beta-1.fuel.network/graphql](https://node-beta-1.fuel.network/graphql)
- [https://node-beta-1.fuel.network/](https://node-beta-1.fuel.network/)
- node-beta-1.fuel.network/graphql
- node-beta-1.fuel.network
- [https://node-beta-2.fuel.network/graphql](https://node-beta-2.fuel.network/graphql)
- [https://node-beta-2.fuel.network/](https://node-beta-2.fuel.network/)
- node-beta-2.fuel.network/graphql
- node-beta-2.fuel.network

---

<div class="post-metadata">

**Author:** ![matt](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/matt/32/6_2.png) [@matt](https://forum.fuel.network/u/matt)\
**Post date:** [December 15, 2022, 4:43pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/3 "2022-12-15T16:43:24Z")

</div>

Hi, could you please provide the versions you are using for forc, fuel-core, and fuels?

forc --version  
fuel-core --version

and your fuels version is specified in your Cargo.toml

---

<div class="post-metadata">

**Author:** ![fuel](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/fuel/32/1677_2.png) [@fuel](https://forum.fuel.network/u/fuel)\
**Post date:** [December 15, 2022, 4:59pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/4 "2022-12-15T16:59:30Z")

</div>

@matt

```auto
forc 0.31.1
fuel-core 0.14.1
fuels = { version = "0.32", features = ["fuel-core-lib"] }

```

---

<div class="post-metadata">

**Author:** ![matt](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/matt/32/6_2.png) [@matt](https://forum.fuel.network/u/matt)\
**Post date:** [December 15, 2022, 6:34pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/5 "2022-12-15T18:34:06Z")

</div>

If you want to deploy to the testnet v2 you are going to have to downgrade your fuels version to work with your version of forc and fuel-core. Try fuels version 0.31

---

<div class="post-metadata">

**Author:** ![fuel](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/fuel/32/1677_2.png) [@fuel](https://forum.fuel.network/u/fuel)\
**Post date:** [December 15, 2022, 7:32pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/6 "2022-12-15T19:32:35Z")

</div>

> [@matt](#):
>
> 0.31

```auto
panicked at 'called `Result::unwrap()` on an `Err` value: ProviderError("Response errors; Unknown type \"ExcludeInput\"; Unknown type \"ExcludeInput\"; Unknown field \"resourcesToSpend\" on type \"Query\". Did you mean \"coinsToSpend\"?; Unknown field \"messageId\" on type \"Message\".")', tests/harness.rs:54:63

```

---

<div class="post-metadata">

**Author:** ![matt](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/matt/32/6_2.png) [@matt](https://forum.fuel.network/u/matt)\
**Post date:** [December 15, 2022, 7:54pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/7 "2022-12-15T19:54:15Z")

</div>

Could you post your code somewhere so we can look at it?

---

<div class="post-metadata">

**Author:** ![fuel](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/fuel/32/1677_2.png) [@fuel](https://forum.fuel.network/u/fuel)\
**Post date:** [December 15, 2022, 8:00pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/8 "2022-12-15T20:00:40Z")

</div>

sure

[Repo](https://github.com/sway-gang/fuel-token-standard)  
[Test File](https://github.com/sway-gang/fuel-token-standard/blob/master/tests/actions/deploy_token_contract.rs)

---

<div class="post-metadata">

**Author:** ![matt](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/matt/32/6_2.png) [@matt](https://forum.fuel.network/u/matt)\
**Post date:** [December 15, 2022, 8:16pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/9 "2022-12-15T20:16:21Z")

</div>

I’m getting 404 errors when trying to view the links you sent

---

<div class="post-metadata">

**Author:** ![fuel](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/fuel/32/1677_2.png) [@fuel](https://forum.fuel.network/u/fuel)\
**Post date:** [December 15, 2022, 8:18pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/10 "2022-12-15T20:18:47Z")

</div>

Oh sorry it was private, please try again

---

<div class="post-metadata">

**Author:** ![matt](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/matt/32/6_2.png) [@matt](https://forum.fuel.network/u/matt)\
**Post date:** [December 15, 2022, 8:40pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/11 "2022-12-15T20:40:25Z")

</div>

This compiles and runs on my computer (one test still fails). Make sure you change your fuels version to 0.31 (this isn’t the case for what’s on github rn)

```auto
use fuels::prelude::*;

abigen!(TestToken, "out/debug/token_contract-abi.json");

pub struct WaletsSetup {
    pub wallet_owner: WalletUnlocked,
    pub wallet1: WalletUnlocked,
    pub wallet2: WalletUnlocked,
}

pub mod abi_calls {
    use fuels::contract::contract::CallResponse;

    use super::*;

    pub async fn initialize(
        contract: &TestToken,
        mint_amount: u64,
        address: Address,
    ) -> Result<CallResponse<()>, Error> {
        contract
            .methods()
            .initialize(mint_amount, address)
            .call()
            .await
    }

    pub async fn get_mint_amount(contract: &TestToken) -> Result<CallResponse<u64>, Error> {
        contract.methods().get_mint_amount().call().await
    }
    pub async fn name(contract: &TestToken) -> Result<CallResponse<fuels::core::types::SizedAsciiString<9>>, Error> {
        contract.methods().name().call().await
    }
    pub async fn symbol(contract: &TestToken) -> Result<CallResponse<fuels::core::types::SizedAsciiString<4>>, Error> {
        contract.methods().symbol().call().await
    }
    pub async fn decimals(contract: &TestToken) -> Result<CallResponse<u8>, Error> {
        contract.methods().decimals().call().await
    }

    pub async fn set_mint_amount(
        contract: &TestToken,
        mint_amount: u64,
    ) -> Result<CallResponse<()>, Error> {
        contract.methods().set_mint_amount(mint_amount).call().await
    }

    pub async fn mint_coins(
        contract: &TestToken,
        mint_amount: u64,
    ) -> Result<CallResponse<()>, Error> {
        contract.methods().mint_coins(mint_amount).call().await
    }

    pub async fn burn_coins(
        contract: &TestToken,
        burn_amount: u64,
    ) -> Result<CallResponse<()>, Error> {
        contract.methods().burn_coins(burn_amount).call().await
    }

    pub async fn get_balance(contract: &TestToken) -> Result<CallResponse<u64>, Error> {
        contract.methods().get_balance().call().await
    }

    pub async fn transfer_token_to_output(
        contract: &TestToken,
        coins: u64,
        asset_id: ContractId,
        address: Address,
    ) -> Result<CallResponse<()>, Error> {
        contract
            .methods()
            .transfer_token_to_output(coins, asset_id, address)
            .call()
            .await
    }

    pub async fn transfer_coins(
        contract: &TestToken,
        coins: u64,
        address: Address,
    ) -> Result<CallResponse<()>, Error> {
        contract
            .methods()
            .transfer_coins(coins, address)
            .append_variable_outputs(1)
            .call()
            .await
    }
    pub async fn mint(contract: &TestToken) -> Result<CallResponse<()>, Error> {
        contract
            .methods()
            .mint()
            .append_variable_outputs(1)
            .call()
            .await
    }
}

pub mod setup_utils {
    use super::*;

    pub async fn setup_wallets() -> WaletsSetup {
        let initial_amount = 1000000000;
        let num_wallets = 3;
        let num_coins = 1;

        let config = WalletsConfig::new(Some(num_wallets), Some(num_coins), Some(initial_amount));
        let wallets = launch_custom_provider_and_get_wallets(config, None, None).await;
        let wallet_owner = wallets.get(0).unwrap().clone();
        let wallet1 = wallets.get(1).unwrap().clone();
        let wallet2 = wallets.get(2).unwrap().clone();

        return WaletsSetup {
            wallet_owner,
            wallet1,
            wallet2,
        };
    }

    pub async fn setup_token_contract(wallet_owner: &WalletUnlocked) -> TestToken {
        let token_contract_id = Contract::deploy(
            "out/debug/token_contract.bin",
            wallet_owner,
            TxParameters::default(),
            StorageConfiguration::with_storage_path(Some(
                "./out/debug/token_contract-storage_slots.json".to_string(),
            )),
        )
        .await
        .unwrap();

        return get_token_instance(&token_contract_id, wallet_owner);
    }

    pub async fn setup() -> (TestToken, WaletsSetup) {
        let wallets = setup_wallets().await;
        let token = setup_token_contract(&wallets.wallet_owner).await;
        return (token, wallets);
    }

    pub fn get_token_instance(
        token_contract_id: &Bech32ContractId,
        wallet: &WalletUnlocked,
    ) -> TestToken {
        return TestToken::new(token_contract_id.clone(), wallet.clone());
    }
}

//=========================== 👇🏻 DRAFTS 👇🏻 ================================
//========================================================================
//========================================================================
//========================================================================

// pub struct Metadata {
// pub token: TestToken,
// pub wallet_owner: WalletUnlocked,
// pub wallet_mint1: WalletUnlocked,
// pub wallet_mint2: WalletUnlocked,
// }

// pub mod test_helpers {
// use super::*;

// pub async fn setup() -> (Metadata, Vec<WalletUnlocked>) {
// let wallets = launch_custom_provider_and_get_wallets(WalletsConfig::default(), None).await;

// let contract_id = Contract::deploy(
// "./out/debug/token_contract.bin",
// &wallets[0],
// TxParameters::default(),
// StorageConfiguration::default(),
// )
// .await
// .unwrap();

// let user = Metadata {
// token: Token::new(contract_id.clone(), wallets[0].clone()),
// wallet: wallets[0].clone().lock(),
// };

// (user, wallets)
// }
// }

```

---

<div class="post-metadata">

**Author:** ![fuel](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/fuel/32/1677_2.png) [@fuel](https://forum.fuel.network/u/fuel)\
**Post date:** [December 15, 2022, 8:54pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/12 "2022-12-15T20:54:05Z")

</div>

Removed out, target, and .lock files. rebuild the dapp and refactor a bit

> <https://github.com/sway-gang/fuel-token-standard/pull/1>

and now the output looks like that

```auto
thread 'actions::deploy_token_contract::deploy_token_contract' panicked at '❌ Problem deploing the dapp: ProviderError(
    "Response errors; Unknown field \"header\" on type \"Block\".",
)', tests/actions/deploy_token_contract.rs:32:23
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
test actions::deploy_token_contract::deploy_token_contract ... FAILED

```

---

<div class="post-metadata">

**Author:** ![matt](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/matt/32/6_2.png) [@matt](https://forum.fuel.network/u/matt)\
**Post date:** [December 15, 2022, 8:56pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/13 "2022-12-15T20:56:59Z")

</div>

try changing your rpc string to “node-beta-2.fuel.network”

---

<div class="post-metadata">

**Author:** ![fuel](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/fuel/32/1677_2.png) [@fuel](https://forum.fuel.network/u/fuel)\
**Post date:** [December 15, 2022, 8:57pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/14 "2022-12-15T20:57:25Z")

</div>

Maybe I have the wrong versions?

```auto
installed toolchains
--------------------
beta-2-aarch64-apple-darwin (default)
latest-aarch64-apple-darwin
alt-toolchain

active toolchain
-----------------
beta-2-aarch64-apple-darwin (default)
  forc : 0.31.1
    - forc-client
      - forc-deploy : 0.31.1
      - forc-run : 0.31.1
    - forc-doc : 0.31.1
    - forc-explore : 0.28.1
    - forc-fmt : 0.31.1
    - forc-lsp : 0.31.1
    - forc-wallet : 0.1.2
  fuel-core : 0.14.1
  fuel-indexer - not found

```

---

<div class="post-metadata">

**Author:** ![matt](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/matt/32/6_2.png) [@matt](https://forum.fuel.network/u/matt)\
**Post date:** [December 15, 2022, 8:59pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/15 "2022-12-15T20:59:48Z")

</div>

Your versions look correct to interact with the v2 testnet. Try my rpc string suggestion and if it doesn’t work I can take another look

---

<div class="post-metadata">

**Author:** ![fuel](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/fuel/32/1677_2.png) [@fuel](https://forum.fuel.network/u/fuel)\
**Post date:** [December 15, 2022, 9:09pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/16 "2022-12-15T21:09:01Z")

</div>

After changing of RPC error changed

```auto
thread 'actions::deploy_token_contract::deploy_token_contract' panicked at '❌ Problem deploing the dapp: ProviderError(
    "gas_price(0) is lower than the required min_gas_price(1)",
)', tests/actions/deploy_token_contract.rs:32:23

```

Btw it looks cool already

---

<div class="post-metadata">

**Author:** ![fuel](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/fuel/32/1677_2.png) [@fuel](https://forum.fuel.network/u/fuel)\
**Post date:** [December 15, 2022, 9:17pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/17 "2022-12-15T21:17:13Z")

</div>

I can setup it with `tx_params`

---

<div class="post-metadata">

**Author:** ![matt](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/matt/32/6_2.png) [@matt](https://forum.fuel.network/u/matt)\
**Post date:** [December 15, 2022, 9:20pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/18 "2022-12-15T21:20:04Z")

</div>

yeah to interact with the testnet (deploy your contract) you need to specify a gas price.  
Try this

```auto
TxParameters::new(Some(1), None, None)

```

instead of TxParameters::default() when you deploy your contract. Also I would suggest only deploying and testing on the testnet after you have thoroughly tested your contracts locally. That way you don’t uneccessarily burn through test tokens.

---

<div class="post-metadata">

**Author:** ![fuel](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/fuel/32/1677_2.png) [@fuel](https://forum.fuel.network/u/fuel)\
**Post date:** [December 15, 2022, 9:25pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/19 "2022-12-15T21:25:45Z")

</div>

> [@matt](#):
>
> ```auto
> TxParameters::new(Some(1), None, None)
> 
> ```

Thanks! Deploy well done!!!  
One more question  
trying to call initialize in and have the same error

**Code:**

```auto
instance
        .methods()
        .initialize(parse_units(1000, decimals), Address::from(wallet.address()))
        .tx_params(TxParameters::new(Some(1), None, None))
        .call()
        .await
        .unwrap();

```

**Error**

```auto
thread 'initialize_usdt' panicked at 'called `Result::unwrap()` on an `Err` value: ProviderError("gas_price(0) is lower than the required min_gas_price(1)")', tests/harness.rs:54:63

```

How to provide the gas price correctly in that case?

---

<div class="post-metadata">

**Author:** ![matt](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.fuel.network/matt/32/6_2.png) [@matt](https://forum.fuel.network/u/matt)\
**Post date:** [December 15, 2022, 9:42pm UTC](https://forum.fuel.network/t/how-to-deploy-a-contract-in-testnet-using-rust-sdk/801/20 "2022-12-15T21:42:22Z")

</div>

Hmm the code you have should work. Could you push your code again so I take another look at it?

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