as a json-rpc type; strings must be prefixed with \"0x\"

[somoza]

Hi, I have a code programmed in Elixir which worked perfectly a few months ago in a Debian 10. Some months later, trying to run it again on a MacBook M1 Pro, I got this error:

as a json-rpc type; strings must be prefixed with "0x"

Is strange as I never got this message before and the interaction with the contract worked perfectly.

The code is exactly the same, even though I did a git --hard reset to be sure.

Could be a breaking change or something new on Ganache I'm missing?

Thanks!

Full error message:

%{
  message: %{
    "code" => -32700,
    "message" => "Cannot wrap string value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as a json-rpc type; strings must be prefixed with \"0x\".",
    "stack" => "Error: Cannot wrap string value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as a json-rpc type; strings must be prefixed with \"0x\".\n    at parseAndValidateStringInput (/Applications/Ganache.app/Contents/Resources/static/node/node_modules/ganache/dist/node/1.js:2:227868)\n    at new BaseJsonRpcType (/Applications/Ganache.app/Contents/Resources/static/node/node_modules/ganache/dist/node/1.js:2:49162)\n    at new Data (/Applications/Ganache.app/Contents/Resources/static/node/node_modules/ganache/dist/node/1.js:2:230558)\n    at Function.from (/Applications/Ganache.app/Contents/Resources/static/node/node_modules/ganache/dist/node/1.js:2:231087)\n    at Function.toBuffer (/Applications/Ganache.app/Contents/Resources/static/node/node_modules/ganache/dist/node/1.js:2:231437)\n    at Function.fromString (/Applications/Ganache.app/Contents/Resources/static/node/node_modules/ganache/dist/node/1.js:2:209293)\n    at EthereumApi.eth_sendRawTransaction (/Applications/Ganache.app/Contents/Resources/static/node/node_modules/ganache/dist/node/1.js:2:88181)\n    at EthereumApi.n.value (/Applications/Ganache.app/Contents/Resources/static/node/node_modules/ganache/dist/node/1.js:2:238968)\n    at Object.execute (/Applications/Ganache.app/Contents/Resources/static/node/node_modules/ganache/dist/node/1.js:2:165607)\n    at RequestCoordinator.<anonymous> (/Applications/Ganache.app/Contents/Resources/static/node/node_modules/ganache/dist/node/1.js:2:165421)"

[davidmurdoch]

Looks like you are sending or estimating a transaction with a data param that doesn't start with 0x.

[somoza]

The function has 5 parameters: subscribeMinute(uint, uint, string, string, string) there is no problem with the uints, but the strings seem to have the problem. I generated and signed the ABI both from my script and using https://abi.hashex.org/

I can't figure out how this worked on February. I will try to run it again in my old laptop with Debian 10 to make sure if it's a Ganache bug on Mac.

[davidmurdoch]

Does the data you are sending to ganache start with a 0x? If not, you're doing it wrong and you need to add "0x" to the start of the data/input param.