Using Uploadcare get a 500 server error


I am trying to use uploadcare to be able to upload a file into a form. I followed all the steps described here: A Guide to Integrating Uploading Widget with Webflow Forms | Uploadcare Docs, but when I publish and try to upload, I get an error in the form. The chrome console is giving me a 500 (Internal Server Error) see attached screenshot. Does anyone have any idea on how to fix it?

Screenshot 2023-06-05 at 2.50.39 PM

Here is my site Read-Only: Webflow - Montero Smile Art