error code -32602: duplicate field `data` at line 1 column 194

[HowHsu]

Component

Cast

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

• [X] Foundry
• [ ] Foundryup

What version of Foundry are you on?

forge 0.2.0 (36cbce7 2024-11-15T00:21:52.319667269Z)

What command(s) is the bug in?

cast call

Operating System

Linux

Describe the bug

cast call {contract_address} {function_sig} {args} --rpc-url ...

Call a view contract function =, but got this error retuns: Error: server returned an error response: error code -32602: duplicate fielddataat line 1 column 194

[yash-atreya]

Can you provide the full command with the contract address and func sig?

[yash-atreya]

Can you provide the full command with the contract address and func sig?

[HowHsu]

Can you provide the full command with the contract address and func sig?

It's a private blockchain, the func is "owner()" (the owner() of Ownable)

[HowHsu]

cast call 0xECaE5ba39d697753D1936D76a3852FeB08c11d82 "owner()" --rpc-url

[grandizzy]

It looks like an issue with the chain as it cannot be reproduced on local anvil nor or mainnet / optimism etc. We'll probably need more details for the ticket @HowHsu

[HowHsu]

It looks like an issue with the chain as it cannot be reproduced on local anvil nor or mainnet / optimism etc. We'll probably need more details for the ticket @HowHsu

More info: I alternatively use foundry solidity script, it works

[HowHsu]

I guess the root-cause is maybe that:

1. the chain is not a standard evm chain
2. difference between cast and foundry script

The chain is called Deep Brain Chain, which is a variant of Substrate: https://www.deepbrainchain.org/

[zerosnacks]

Yes, Foundry does not support non-EVM chains

Marking as won't fix

[HowHsu]

Yes, Foundry does not support non-EVM chains

Marking as won't fix

It's not 'non-EVM', it is EVM-compatible

[grandizzy]

Yeah, but non standard could be incompatible in some aspects like this (here's another ticket / sample with chain that doesn't follow standard https://github.com/foundry-rs/foundry/issues/7640#issuecomment-2429278005). Do you use the same evm_version for both script and cast? (if not specified it is using paris)