I had the same problem but using the Sepolia network as Goerli now requires you to have real ETH.
The problem you are facing is related to your network/chainId.
### Step 1. In your ```hardhat.config.js```, have your defaultNetwork as Sepolia, and make sure you have the correct rpc. [Thirdweb has provided one here](https://thirdweb.com/sepolia), or copy below.
```js defaultNetwork: "sepolia", networks: { hardhat: {}, sepolia: { url: "https://sepolia.rpc.thirdweb.com", accounts: [`0x${process.env.PRIVATE_KEY}`], }, ```
### Step 2 In your ```main.jsx```, you need to import Sepolia from thirdweb dev chains, then set the activeChain as Sepolia. [See how to get started with Sepolia](https://thirdweb.com/sepolia).
```js import { Sepolia } from "@thirdweb-dev/chains";
...
<ThirdwebProvider activeChain={ Sepolia } clientId="YOUR_CLIENT_ID" // You can get a client id from dashboard settings > <Router> <StateContextProvider> <App /> </StateContextProvider> </Router> </ThirdwebProvider> ```
This is what worked for me.

I had the same problem but using the Sepolia network as Goerli now requires you to have real ETH.
The problem you are facing is related to your network/chainId.
### Step 1. In your ```hardhat.config.js```, have your defaultNetwork as Sepolia, and make sure you have the correct rpc. [Thirdweb has provided one here](https://thirdweb.com/sepolia), or copy below.
```js defaultNetwork: "sepolia", networks: { hardhat: {}, sepolia: { url: "https://sepolia.rpc.thirdweb.com", accounts: [`0x${process.env.PRIVATE_KEY}`], }, ```
### Step 2 In your ```main.jsx```, you need to import Sepolia from thirdweb dev chains, then set the activeChain as Sepolia. [See how to get started with Sepolia](https://thirdweb.com/sepolia).
```js import { Sepolia } from "@thirdweb-dev/chains";
...
<ThirdwebProvider activeChain={Sepolia}> <Router> <StateContextProvider> <App /> </StateContextProvider> </Router> </ThirdwebProvider> ```
This is what worked for me.