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We are trying to upload the required screencast as part of the App Review process, but the upload progress stays at 0 and eventually we get an error message. We have tried using different browsers, different admin accounts and different locations to upload the video, but the same error occurs.
They browser logs some CORS error in the console. So this is a bug with Facebook's servers configuration.
This is one of the console errors that repeats multiple times:
Access to XMLHttpRequest at 'https://rupload-lax3-2.up.facebook.com/fb_video/fae370edf94f16c8ac309d7430281047-0-1686406?fb_dtsg_ag=AQxZ1Zd1RTC3_gWIdBFjFzmEjpOd-1Bq4eRNj0yvYUWGgcBL%3A35%3A1727477982&__usid=6-Tsknisp1sjybrs%3APskqmdb8x0ewj%3A0-Askqlrbpy3q99-RV%3D6%3AF%3D&__aaid=0&__bid=483746382176962&__user=520712015&__a=1&__req=1p&__hs=19998.BP%3Adevsite_pkg.2.0..0.0&dpr=1&__ccg=GOOD&__rev=1016988355&__s=i2ioun%3Ahpzqd9%3Arn9or7&__hsi=7421219415939036894&__dyn=7xeUmxa3-Q5E9EdoK6EjBAgc9o9E6u5U4e1FxZ3odEnxy7EiwnobES2S0zU2lxa2m4o3Bw5VCyU4aUaVqxN0Cmu11x-7U7G78b87C2m3K2y11wBw4WwgEhwnU6a0HU9k2C0O84K5E2sx2ewyx6i2GU8U-U2zxe7o2UwwwNwmEiwBwlo5W0HUkyE16Ec8-3qazo8U3ywbS1Lwqp8aE2cwmo6O1Fwp81587u1rwGw9q&__csr=&jazoest=24804' from origin 'https://developers.facebook.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.