Metamask: Web3 Could not find name ‘Web3’. Did you mean ‘web3’

Metamask Integration Error: Resolving “Web3” Name Mismatch

As a web3 developer, you are not alone in having issues resolving the “Web3” name mismatch. This error commonly occurs when using the MetaMask browser extension to connect your Ethereum wallet to your web applications.

The error message “Could not find name ‘Web3′” or “Did you mean ‘web3’?” suggests that Metamask is unable to determine whether to use Web3 or web3 as the provider for Web3.js, a popular JavaScript library used to interact with the Ethereum blockchain.

Causes of the issue

There are several reasons why this could happen:

• Provider URL mismatch

  : Make sure you have provided the correct provider URL in the MetaMask extension settings.

• InfuraUrl not set as default provider: If you are using Infura Web3 API, make sure it is set as your default provider by clicking the “Settings” icon and selecting “Default provider”.

• InfuraUrl not configured correctly for Web3.js: Make sure Infura Web3 API is configured correctly to use Web3.js.

Troubleshooting

To resolve this issue, follow these steps:

• Check provider URL: Verify that you have provided the correct InfuraUrl in the MetaMask extension settings.

• Check default provider selection: Make sure Infura Web3 API is selected as your default provider by clicking the “Settings” icon and selecting “Default provider”.

• Update provider configuration for Web3.js: If you are using Infura, make sure your provider URL is configured correctly to use Web3.js. You can do this by updating the infuraUrl variable in your code:

const web3 = new Web3(new Web3.providers.HttpProvider('

Replace 'YOUR_PROJECT_ID' with your actual Infura project ID.

• Try again: After making these changes, try connecting to the Ethereum network and verify that you are using web3 as your provider:

console.log(web3.eth.net === '

If you still have issues, please provide more details about your code and setup and I will be happy to help you further.

Ethereum Taproot Multisig Keys

Categorised in: CRYPTOCURRENCY

This post was written by Munna