First time running uploadthing in production (Vercel)

Apologize if this question has already been answered here, i've already searched Google and the questions channel but have not found a good answer.

I just pushed my first deployment of uploadthing to my vercel production app and I am getting the following error when I try to upload an image:

[UT] Call unsuccessful after 4 tries. Retrying in 8 seconds...

I verified that the file was successfully uploaded to my uploadthing account, i've set UPLOADTHING_URL to my public facing vercel domain, and set the callbackUrl in my router config to ${process.env.NEXT_PUBLIC_URL}/api/uploadthing/ (Note: I had to do this because I am running my stack via lando locally) using the following:

export const { GET, POST } = createNextRouteHandler({
  router: ourFileRouter,
  config: {
    callbackUrl: `${process.env.NEXT_PUBLIC_URL}/api/uploadthing/`,
  },
});


Any tips on what I should look for next?
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