Why did Cardi B need an oxygen mask backstage during her Denver concert?

AI Briefing

• – Cardi B needed an oxygen mask backstage due to a reported medical issue, but details about the nature of the issue were not disclosed.
• – The Oxygen4All Foundation, which supports patients with sickle cell disease, was also honored during the concert.
• – The concert resumed after a brief delay, with Cardi B performing without further incident.