reproduction using raydium_amm_v4_with_swapv2.codama.json

[grooviegermanikus]

3 | include_vixen_parser!("raydium_amm_v4_with_swapv2.codama.json");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: message: Failed to decode base16 (hex) bytes: OddLength

this cases the issue: the hex value is 1-byte which breaks the hex decoder:

"defaultValue": {
"kind": "bytesValueNode",
"data": "5",
"encoding": "base16"
}

[grooviegermanikus]

this was my workaround: grooviegermanikus@8f13ef6