Invalid Subscription ID (0) When Following Tutorial on Sepolia - Possible Issue in Subscription Creation

[NyxAzrael]

Hi there! I'm following PatrickAlphaC's tutorial on funding a subscription, but I'm encountering an InvalidSubscription error when deploying to Sepolia. Here's my situation:

my code

  function getSepoliaEthConfig() public pure returns (NetworkConfig memory) {
        return NetworkConfig({
            ticketPrice: 0.01 ether, // 1e16
            interval: 30, // 30 seconds
            vrfCoordinatorV2: 0x9DdfaCa8183c41ad55329BdeeD9F6A8d53168B1B,
            gasLane: 0x787d74caea10b2b357790d5b5247c2f63d1d91572a9846f780606e4d953677ae,
            callbackGasLimit: 500000, // 500,000 gas
            subscriptionId: 0,
            link: 0x779877A7B0D9E8603169DdbD7836e478b4624789
        });
    }

github's code

    function getSepoliaEthConfig() public pure returns (NetworkConfig memory sepoliaNetworkConfig) {
        sepoliaNetworkConfig = NetworkConfig({
            subscriptionId: 0, // If left as 0, our scripts will create one!
            gasLane: 0x787d74caea10b2b357790d5b5247c2f63d1d91572a9846f780606e4d953677ae,
            automationUpdateInterval: 30, // 30 seconds
            raffleEntranceFee: 0.01 ether,
            callbackGasLimit: 500000, // 500,000 gas
            vrfCoordinatorV2_5: 0x9DdfaCa8183c41ad55329BdeeD9F6A8d53168B1B,
            link: 0x779877A7B0D9E8603169DdbD7836e478b4624789,
            account: 0x643315C9Be056cDEA171F4e7b2222a4ddaB9F88D
        });
    }

both subid is zero,thus I suspect there may be an issue with my subscription creation code.

//Interaction.s.sol

contract CreateSubscription is Script {
    function createSubscriptionUsingConfig() public returns (uint256, address) {
        HelpConfig helpConfig = new HelpConfig();
        HelpConfig.NetworkConfig memory config = helpConfig.getConfig();
        address vrfCoordinator = config.vrfCoordinatorV2;
        (uint256 subId,) = createSubscription(vrfCoordinator);
        return (subId, vrfCoordinator);
    }

    function createSubscription(address vrfCoordinator) public returns (uint256, address) {
        console.log("Creating subscription on chainId", block.chainid);
        vm.startBroadcast();
        uint256 subscriptionId = VRFCoordinatorV2_5Mock(vrfCoordinator).createSubscription();
        vm.stopBroadcast();
        console.log("Subscription created with id", subscriptionId);
        console.log("Updating config with subscriptionId", subscriptionId);
        return (subscriptionId, vrfCoordinator);
    }

    function run() public {
        createSubscriptionUsingConfig();
    }
}

//Deploy.s.sol

     if (config.subscriptionId == 0) {
            CreateSubscription createSubscription = new CreateSubscription();
            (config.subscriptionId, config.vrfCoordinatorV2) = createSubscription.createSubscriptionUsingConfig();
        }

[KMean]

@NyxAzrael I can see you're still not at the part where you create an account so what command did you use to deploy it? please consider to copy and paste your stack trace instead of a screenshot so we can see it better.

[EngrPips]

Great heads-up.

[NyxAzrael]

❯ forge script script/Intercation.s.sol:FundSubscription --rpc-url $SEP_RPC_URL --private-key $Key --broadcast -vvvv
[⠒] Compiling...
[⠃] Compiling 4 files with Solc 0.8.19
[⠊] Solc 0.8.19 finished in 1.78s
Compiler run successful with warnings:
Warning (2072): Unused local variable.
--> src/raffle.sol:99:9:
|
99 | uint256 requestId = s_vrfCoordinator.requestRandomWords(
| ^^^^^^^^^^^^^^^^^

Warning (5667): Unused function parameter. Remove or comment out the variable name to silence this warning.
--> src/raffle.sol:118:33:
|
118 | function fulfillRandomWords(uint256 requestId, uint256[] calldata randomWords) internal override {
| ^^^^^^^^^^^^^^^^^

Traces:
[8860334] → new FundSubscription@0x5b73C5498c1E3b4dbA84de0F1833c4a029d90519
└─ ← [Return] 44129 bytes of code

[8184011] FundSubscription::run()
├─ [8095575] → new HelpConfig@0xC7f2Cf4845C6db0e1a1e91ED41Bcd0FcC1b0E141
│ └─ ← [Return] 39375 bytes of code
├─ [3101] HelpConfig::getConfig()
│ └─ ← [Return] NetworkConfig({ ticketPrice: 10000000000000000 [1e16], interval: 30, subscriptionId: 0, gasLane: 0x787d74caea10b2b357790d5b5247c2f63d1d91572a9846f780606e4d953677ae, callbackGasLimit: 500000 [5e5], vrfCoordinatorV2: 0x9DdfaCa8183c41ad55329BdeeD9F6A8d53168B1B, link: 0x779877A7B0D9E8603169DdbD7836e478b4624789 })
├─ [0] console::log("Funding subscription with id", 0) [staticcall]
│ └─ ← [Stop]
├─ [0] console::log("Funding subscription on chainId", 11155111 [1.115e7]) [staticcall]
│ └─ ← [Stop]
├─ [0] VM::startBroadcast()
│ └─ ← [Return]
├─ [26656] 0x779877A7B0D9E8603169DdbD7836e478b4624789::transferAndCall(0x9DdfaCa8183c41ad55329BdeeD9F6A8d53168B1B, 3000000000000000000 [3e18], 0x0000000000000000000000000000000000000000000000000000000000000000)
│ ├─ emit Transfer(from: 0x34EB85766aAD840c0F946822FEC8113e343A1182, to: 0x9DdfaCa8183c41ad55329BdeeD9F6A8d53168B1B, amount: 3000000000000000000 [3e18])
│ ├─ emit Transfer(from: 0x34EB85766aAD840c0F946822FEC8113e343A1182, to: 0x9DdfaCa8183c41ad55329BdeeD9F6A8d53168B1B, value: 3000000000000000000 [3e18], data: 0x0000000000000000000000000000000000000000000000000000000000000000)
│ ├─ [7285] 0x9DdfaCa8183c41ad55329BdeeD9F6A8d53168B1B::onTokenTransfer(0x34EB85766aAD840c0F946822FEC8113e343A1182, 3000000000000000000 [3e18], 0x0000000000000000000000000000000000000000000000000000000000000000)
│ │ └─ ← [Revert] InvalidSubscription()
│ └─ ← [Revert] InvalidSubscription()
└─ ← [Revert] InvalidSubscription()

== Logs ==
Funding subscription with id 0
Funding subscription on chainId 11155111
Error: script failed: InvalidSubscription()

this is my stack trace

[EngrPips]

Please show your FundSubscription script.

[KMean]

@NyxAzrael In your HelperConfig subId is 0 so if you don't create one is always going to fail on sepolia. If you want to use Intercation.s.sol:FundSubscription as you did you need to create one on the chainlink UI and use that one in your HeperConfig.

[EngrPips]

Great Heads-up.