Need Help with Building get API to Return Image

I’m trying to utilize the http-functions to create a get API that returns an image.

I have the headers set to the following in an attempt to return an image file when the API is called.
“Content-Type” : “image/png”

The data in which the function is returning is a string set to the value of:

"data:image/png;base64,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"

When I try putting this into a Data URI to Image converter, I receive the proper image. But when I visit the API URL, while the source provides this data, it shows the image as not able to load.

Here’s the URL to my API: http://mitchwagnerdesign.com/_functions/qr?data=Hello

Please let me know if anyone has had any experience returning an image from http-functions, and if you have any explanation for what’s going on.

Thank you!
Mitch