lendingPool: low-level call failed. Problem with aave depositing.

[ghost]

self-check

• I checked lesson 13, error Error: VM Exception while processing transaction: reverted with reason string 'SafeERC20: low-level call failed' #1846 discussion, but solution described there doesn't work for me.

main

Hi there. I've been trying to reach some help through this issue: PatrickAlphaC/hardhat-defi-fcc#10. Unfortunately, I'm stuck with this problem till today. The worst thing is that I don't have even idea how to debug that. I'm sure that iweth is approved to lendingPool, and lendingPoolAddressesProvider works correctly, but what could be the problem with if not two of these aspects? My forking is configured just as it was in the video, so I'm pretty much in despair now. My github repo is here: https://github.com/joWexler/defi-aave.

I hope anybody will at least have a jist. Thank you!

[othaime-en]

Hey @joWexler there is an issue with you code on line 21 (aaveBorrow.ts). You are using deployer.address which is incorrect because deployer is already an address. Make that correction ( should be deployer instead of deployer.address ) and lets see if it fixes your problem.

[ghost]

Well, on line number 7 const deployer = (await ethers.getSigners())[0]; I get the SignerWithAddress object, so unfortunately typescript is angry when I try to remve .address, you can see it here:

[othaime-en]

Hmm... Well, how about you use getNamedAccounts instead of getSigners. Replace line 7 with const { deployer } = await getNamedAccounts()
And be sure to import getNamedAccounts object from hardhat. Use import { ethers, getNamedAccounts } from "hardhat" on line 3
Then use deployer alone instead of deployer.address and see if it yields any fruits.

[ghost]

@othaime-en thanks for attention, but deployer in my case is the first account provided by hardhat.config:

I tried both, deployer.address and deployer derived from getNamedAccounts are the same strings. However, getContractAt function requires deployer to be of type Signer, not a string (see signer parameter):

So I guess problem is in something else, btw, do you mind running it on your host, I'm afraid something might be wrong with forking and my network. Just run npm i, provide .env with MAINNET_RPC_URL and run hh run ./scripts/aaveBorrow.ts

[ghost]

That would reaaaaly helpful)

[othaime-en]

Hey @joWexler I think I found the issue in your code. There was an issue with the way your were running the getWeth script. Still not sure why but when I imported the script and run it normally inside the function, everything worked out perfectly.

The deployer.address is just fine, I noticed deployer was an object so deployer.address was just fine.
I've made a PR to your repo. Check it out and tell me if fixes your problem.

[ghost]

Sweet Lord, it's working! Thank you @othaime-en, you have done amazing work! I've been struggling with this for days! I don't even know how to thank you! That's quite strange why it didn't work in the first place, maybe hre.run just creates new network for a separate task... anyway, many thanks, you truly do amazing job! Thanks!

[othaime-en]

Glad I helped you out. All the best!