Unable to self-host API due to `Error: TypeError: json.map is not a function`

[ThatOneCalculator]

Upon cloning the repo, installing deps, and running node index.js, I get this error:

➜  api git:(main) ✗ node index.js     
Duplicated:
  There is no duplicated instance!

[17:41:53] Getting Instances' Infos
[17:41:53] Getting Misskey Versions
[17:41:53] GitHub misskey-dev/misskey Start
/home/kainoa/Downloads/api/getInstancesInfos.js:285
			).catch(e => { throw Error(e) })
			                    ^

Error: TypeError: json.map is not a function
    at /home/kainoa/Downloads/api/getInstancesInfos.js:285:25
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async Promise.all (index 0)
    at async getVersions (/home/kainoa/Downloads/api/getInstancesInfos.js:259:17)
    at async module.exports.getInstancesInfos (/home/kainoa/Downloads/api/getInstancesInfos.js:303:38)

Node.js v19.8.0