crashing with missing files

[pcace]

Hi there,
i have just found your repository on my way to learn how to make chatbots. trying to run your app, i run into this error:

[2023-08-03T10:10:21.325Z] INFO: Express server started on port: 3000
[Error: ENOENT: no such file or directory, open '/home/user/git/chatbot/backend/src/documents/Ethereum Whitepaper/index/data/args.json'] {
  errno: -2,
  code: 'ENOENT',
  syscall: 'open',
  path: '/home/user/git/chatbot/backend/src/documents/Ethereum Whitepaper/index/data/args.json'
}
[nodemon] app crashed - waiting for file changes before starting...

any idea what is goin on here?

thanks a lot!