"It was 30 seconds at most," Adela Calin said.
The country singer will make up the gig later this month.
Officials asked fans at Bank of American Stadium to shelter in place on Saturday night.
The "Put It on Da Floor" rapper is the latest star to react to things being hurled during a show.
The iconic artist's record-breaking trek made its last stop in Sweden on July 8.
Fans seen running for cover as venue issued a "seek shelter" order during Wedesday's show.
The incident came just a day after Bebe Rexha was beaned by a fan's thrown cell phone.
The Grammy-winning artist performed at the Crypto.com Arena on June 17 as part of her Unfollow Me tour.
The Formula Vol. 3 Tour continues June 24 in Houston.
The "Thor" star hit a show in New Jersey with Matt Damon to mark his third gig this year.
