Invalid image URL: Expected a base64-encoded data URL with an image MIME type, but got a value without the 'data:' prefix.

To fix the "Invalid image URL" error in the OpenAI API, you need to convert the image URL to a base64-encoded data URL. Here’s a concise solution:

Convert the Image URL to Base64

• Fetch the image data from the provided URL.

• Convert the image data into a base64-encoded string.

• Format the base64 string into a data URL with the appropriate MIME type (e.g., data:image/png;base64,<base64_encoded_data>).

Key Steps

• Use a method to fetch the image data, such as the Fetch API in JavaScript or the https module in Node.js.

• Convert the fetched image data to a base64 string.

• Construct the base64 data URL with the correct MIME type and prefix (data:).