bug(forge script): ResponseData error when verifying smart contract on Mode, but verification succeeds.

[JacobHomanics]

Component

Forge

Have you ensured that all of these are up to date?

• Foundry
• Foundryup

What version of Foundry are you on?

forge 0.2.0 (de596a4 2024-09-06T00:25:03.025680000Z)

What command(s) is the bug in?

forge script

Operating System

macOS (Apple Silicon)

Describe the bug

I try to run this command: forge script script/VerifyAll.s.sol --ffi --rpc-url https://sepolia.mode.network --verifier-url https://sepolia.explorer.mode.network/api.

In response, I get the following output:

forge script script/VerifyAll.s.sol --ffi --rpc-url https://sepolia.mode.network --verifier-url https://sepolia.explorer.mode.network/api
[⠒] Compiling...
No files changed, compilation skipped
2024-10-09T02:54:08.871697Z ERROR etherscan: Failed to deserialize response: data did not match any variant of untagged enum ResponseData res="{\"message\":\"OK\",\"result\":[{\"Address\":\"0x5b73c5498c1e3b4dba84de0f1833c4a029d90519\"}],\"status\":\"1\"}"
Script ran successfully.

The VerifyAll.s.sol file is a utility script which can be found here: VerifyAll.s.sol. However, I have gutted it in my project to be exactly like so:

pragma solidity ^0.8.19;

contract VerifyAll {
    function run() external {}
}

and I still receive the error.

Not sure if there is a way to fix the error on my end or if its an issue with Foundry itself.

Glad to help any way I can.

Thanks!

[zerosnacks]

Hi @JacobHomanics

Mode uses the Blockscout explorer and it looks like we are receiving back some unhandled response data. You can ignore this error, you deployment and verification should still work without issue.

Make sure you pass in the --verify flag and set the --verifier to blockscout

I was able to deploy and verify with the command below just now:

forge script script/<file>.sol --rpc-url https://sepolia.mode.network --verifier-url https://sepolia.explorer.mode.network/api --verify --verifier blockscout --broadcast --keystore <keystore>

For future reference, occurs when not passing --verifier blockscout and instead using the default w/ ETHERSCAN_API_KEY

ERROR etherscan: Failed to deserialize response: data did not match any variant of untagged enum ResponseData res="{\"message\":\"OK\",\"result\":[{\"Address\":\"0x7109709ecfa91a80626ff3989d68f67f5b1dd12d\"}],\"status\":\"1\"}"

WARN traces::etherscan: could not get etherscan info: Serde { error: Error("data did not match any variant of untagged enum ResponseData", line: 0, column: 0), content: "{\"message\":\"OK\",\"result\":[{\"Address\":\"0x7109709ecfa91a80626ff3989d68f67f5b1dd12d\"}],\"status\":\"1\"}" }