Cannot switch signers with ethers.js for a contract interaction using Hardhat

Question

Hardhat specifies that to use a different account for contract interactions you should use the connect() method, passing it a Signer, as such:

const [owner, addr1] = await ethers.getSigners();
/* ... */
await greeter.connect(addr1).setGreeting("Hello!");

Where greeter is the contract instance.

However, when I use a Signer as they specify to, I get the following error:

Error: invalid address or ENS name (argument="name", value="<SignerWithAddress 0x59F...34C>", code=INVALID_ARGUMENT, version=contracts/5.6.0)

The internet says to use an address, such as this issue suggesting to use something like addr1.address. But when I do, the following error results:

VoidSigner cannot sign transactions (operation="signTransaction", code=UNSUPPORTED_OPERATION, version=abstract-signer/5.6.0)

How can I switch signers/accounts when making contract calls with ethers.js and Hardhat?

It seems that you are passing just the address string - not the whole `Wallet` object that you got from `getSigners()`, to the `connect()` function. Can you verify that e.g. with `console.log()` before using the `connect()` function? — Petr Hejda, Jul 08 '22 at 17:23

Jesper - jtk.eth · Answer 1 · 2023-01-29T16:39:03.063

5

The error you get is because you are not passing in the full address object. Specifically, I get your exact error when I do this:

This does not work, but reproduces your error:

[deployer, account1] = await ethers.getSigners();
address1 = account1.address;
/* ... */
await greeter.connect(address1).setGreeting("Hello!");

This works, however:

[deployer, account1] = await ethers.getSigners();
/* ... */
await greeter.connect(account1).setGreeting("Hello!");

Notice that we do not call ".address" on account1 in the second example.

edited Jan 29 '23 at 16:39

answered Aug 06 '22 at 01:13

Jesper - jtk.eth

This is exactly what his code is that is producing errors... – Stackaccount1 Sep 05 '22 at 01:03
yes @Stackaccount1: he edited it after the fact. The original post was different. Thanks for your comment! – Jesper - jtk.eth Jan 14 '23 at 17:59
You confused `.address()` with `.address`. `address` exists only as a property of the signer an not as a method. The code is correct, you just got it confused on the last line – BonisTech Jan 29 '23 at 14:22
1

Great catch @BonisTech, I made the edit; yes indeed an oversight on the last line. – Jesper - jtk.eth Jan 29 '23 at 16:39

1 Answers1