I've been following a tutorial for the past couple of days and I keep getting this error. todoList = await TodoList.deployed() My contract is migrated to the
I Need to Write a Smart Contract, In This Smart Contract User Can Send Token to Each Account in ERC-20 Network. sender :0x5C2879Ec550e2F65D557b540B7DEAB3A6d478d
I'm using Ethers.js to allow users to connect their Metamask wallets to my app. Here's the code that I have: import { ethers } from "ethers" async function con
I'm developing the front-end to an application that I'm trying to test. However, MetaMask keeps giving me this error? I tried changing the gas limit like previo
Here is my use case I have a smart contract that emit an event . I am new to chainlink , so my question if someone know how I can track that event history with
I am executing a dummy (smart) contract through the evm command line to understand how input is passed to the contract. I am using the following contract byteco
I'm trying to encrypt some data using MetaMask's public key for encryption (https://docs.metamask.io/guide/rpc-api.html#unrestricted-methods). However, on page
I’m building a program intended to manage multiple payments with one call. The program needs to complete the following steps: Accept a certain amount of l
I'm coding an bep20 token and if I want to add Liquidity with pancakeswap I get the following error: ProviderError: Error: VM Exception while processing transac
I'm on a course and have run into a problem. I am trying to make a function that shows the difference in team score from the perspective of the team in the vari
For example, in this PATRICIA tree, if I want to prove that the key 'fc' has no value mapped to it, should I bring up the branch node stored the data value &ld
I am trying to sign a message with wallet connect using ethers, but I am facing an issue when verifying the message with ambire wallet, it's not returning any r
Macbook Pro : Monterey Intel Core i7 Brownie v1.17.2 I am learning solidity according to reference(https://www.youtube.com/watch?v=M576WGiDBdQ&t=25510s). Wh
I'm trying to send a permit for a transaction, but I get a function call mismatch return if I call through the smartcontract token function. If I call via encod
I am currently using a public RPC URL to interact with smart contracts on a Ethereum-forked blockchain. I would like to understand if there are any limitations
I'm trying to develop DApp on polygon blockchain. Basically I'm minting NFT but after few mints I get this error. It even happens when I don't mint NFT. Here is
I am asking this question so that I want to easily know how many transactions occurred at a particular Bitcoin price. For example, at the price of $20T per BTC,
i have issue on web3.eth.defaultAccount = web3.eth.getAccounts(); below is the code. it said Uncaught (in promise) TypeError: Cannot read properties of undefine
I deployed an ERC20/BEP20 token on binance smart chain using truffle and openzepplin. Now I want to verify this smart contract but I have some issues. $ truffle
I am trying to implement a merkle tree just like merkletreejs but python does not have any good libraries that support keccak256 and sorted keccak256 trees. Doe