The output dest property in the editor output is always undefined

The editor processes images but when the output is received in the "process" event handler the dest property is undefined.

Usually this happens when the image being loaded doesn't have a valid type. The browser is able to figure out the type for displaying the image, but when the image is processed Pintura needs to look at the file data and can't do so if it doesn't have a valid image type.

If you're loading images from a URL, please make sure your server returns a content-type header for every image.

If you're loading images as Files or Blobs, or DataURL, make sure that for each format the image type or mimetype is supplied.