'file' is a required property Error

API
1

I’m getting a “‘file’ is a required property” error when trying to create a file. After looking at several posts that seem to have have resolved it, I’m still getting the same error.

Here is the error:

{
  error: {
    message: "'file' is a required property",
    type: 'invalid_request_error',
    param: null,
    code: null
  }
}

Here is the code.

const formData = new FormData();
    let file = new Blob(["a string"], {
      type: "text/plain; charset=utf8",
});

formData.append("purpose", "fine-tune");
formData.append("file", file, "file.jsonl");

// Define the endpoint URL for creating files in OpenAI
const url = "https://api.openai.com/v1/files";

// Define the options for the fetch request, including method, headers, and body
const fetchOptions: RequestInit = {
  method: "POST",
  headers: {
    Authorization: `Bearer ${apiKey}`,
  },
  body: formData,
};

// Make the POST request to OpenAI
const response = await fetch(url, fetchOptions);
Can't Create File from FormData in Node.JS?