I'm encountering issues with Retool embed after deploying my project to Vercel. While I didn't face any problems during development on localhost, I'm now receiving the following error regarding the header of the embed URL:
Mixed Content: The page at 'https://retool-frontend-xxxx.vercel.com' was loaded over HTTPS, but requested an insecure frame 'http://xxxxxxx/embed-redirect?nonce=xxxxxxxxx'. This request has been blocked; the content must be served over HTTPS.
I tried adding the below header, but it didn't fix the issue.
<meta
http-equiv="Content-Security-Policy"
content="upgrade-insecure-requests"
/>
Is there a workaround for this problem, or an option to ensure that the Embed URL is served over HTTPS?