Error: bad results from backend

[nenadV91]

Hi, we are facing an issue with unwrap transaction WETH->ETH when connected to our safe via WalletConnect. Looks like the error is occurring inside of estmateGas method and we are not sure how to debug this further. This is a screenshot of the error.

This looks like a part of code where the error is thrown

ethers.js/packages/providers/src.ts/base-provider.ts

Line 1298 in 4166b27

async estimateGas(transaction: Deferrable<TransactionRequest>): Promise<BigNumber> {

.

Is there a way we can modify that typescript file inside of node_modules so we can console.log inside that method and try do debug this issue further?

Edit
That method is creating a request to this url https://rinkeby.infura.io/v3/1221fd11e90849509afafd330ec7acc6 and these are the parameters and response.

Parameters

{
  "id": 1633953614506132,
  "jsonrpc": "2.0",
  "method": "eth_estimateGas",
  "params": [{
    "from": "0x677ab2aa230cace6456daf045f259b8d8bc6db04",
    "to": "0xc778417e063141139fce010982780140aa0cd5ab",
    "data": "0x2e1a7d4d000000000000000000000000000000000000000000000000016345785d8a0000"
  }]
}

Response

{
  "jsonrpc": "2.0",
  "id": 1633953614506132,
  "error": {
    "code": -32000,
    "message": "execution reverted"
  }
}

[ricmoo]

You should be able to modify the code in the node_modules to add additional debugging. I do all the time.

You may also wish to add provider.on("debug", ...).

To bypass the estimate entirely, you can pass in an explicit gasLimit, although the fact estimateGas is failing likely indicates the actual transaction will also fail.

This isn't likely a bug in ethers though, so I'll move it to discussions.