Error: No 'Access-Control-Allow-Origin' header is present on the requested resource

Website, Application, Performance Security
1

Hello Team,

Im running into an issue with my application for ONE specific usecase that im seeing this error on the browser console (chrome). Please note that this is ONLY happening with one specific use case in the whole application. I can get around this when i disable Cloudflare for the site.
I do not have Zero Trust enabled.

  1. Any thoughts on what might be going on? My dev team doesn’t seem to be able to find out the issue.
  2. Also, while we work on this, whats the specific setting (instead of disabling cloudflare on the whole site) under my cloudflare account that I need to disable/enable so that this is temporarily ignored by cloudflare?
/welcome-email/646925b62ff2292d53f:1 Access to XMLHttpRequest at 'https://myhost.com:..port../api/..endpoint../646925b62ff2290d543?undefined' from origin 'https://myhost.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
app.35ce86c2.js:1 Error: Network Error
    at e.exports (chunk-vendors.8c6310c4.js:17:65563)
    at p.onerror (chunk-vendors.8c6310c4.js:58:303974)
chunk-vendors.8c6310c4.js:58     PUT net::ERR_FAILED 403

Appreciate your time!

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