Invalid parameter deserialisation in contructor (2.6.3) about cairo_native HOT 1 OPEN

Hello,

We've seen this error before, it has to do with the contract ABI. Contracts are invoked with a list of felts as arguments, then Cairo's serde (not Rust's, even though they're named the same) decodes it into the correct argument types.

There are some times where the arguments cannot be decoded, for example: there's not enough felts, there's too many felts, the felts have invalid data (for example, an enum tag is out of range)...

My recommendation is that you try to extract the arguments and the expected types from the execution, then try making sense of it from there. The arguments should be as easy as adding dbg!() to the arguments in invoke_contract_dynamic. The expected types is a bit more complicated; if I remember correctly, it's just a sequence of the function arguments. You should be able to find the exact serde implementation for each type in the corelib.

from cairo_native.