Generate single metadata for each images

[Mesyme]

Greetings! first, thanks for your work, you are the best :) I would like to use the main version, instead of v3, because thanks to the commit of caiaga, it is possible to choose the percentage of the trait. But I would also like to be able to generate a single metadata for each images. I tried to copy the code from v3, but it didn't work

const saveMetaDataSingleFile = (_editionCount) => {
  fs.writeFileSync(
    `./output/${_editionCount}.json`,
    JSON.stringify(metadataList.find((meta) => meta.edition == _editionCount))
  );
};

saveMetaDataSingleFile(editionCount);

error

[m@march generative-art-opensource-main]$ node index.js
##################
# Generative Art
# - Create your NFT collection
##################

start creating NFTs.
-----------------
creating NFT 1 of 10
- rarity: original
use random rarity super_rare
- dna: 05-00-02-02-02-02
node:internal/errors:464
    ErrorCaptureStackTrace(err);
    ^

TypeError [ERR_INVALID_ARG_TYPE]: The "data" argument must be of type string or an instance of Buffer, TypedArray, or DataView. Received undefined
    at Object.writeFileSync (node:fs:2146:5)
    at saveMetaDataSingleFile (/home/m/Downloads/generative-art-opensource-main/index.js:175:6)
    at /home/m/Downloads/generative-art-opensource-main/index.js:253:7
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at async startCreating (/home/m/Downloads/generative-art-opensource-main/index.js:237:5) {
  code: 'ERR_INVALID_ARG_TYPE'
}