Some Rolling Stones fans were unable to enter the stadium to see the iconic classic rock group Thursday night after their StubHub tickets were called invalid.

The Stones were originally supposed to stop in Pasadena, California earlier this year on their No Filter Tour, but the gig was rescheduled, along with the rest of the tour, after frontman Mick Jagger needed to receive heart surgery. The show was postponed to August 22 at the Rose Bowl, but a handful of fans who purchased tickets on StubHub were turned away. According to NBC Los Angeles, the ticketing site said they received more than 40 calls from customers who were unable to enter the venue.

StubHub noted that while original tickets are generally honored at a rescheduled show, they understand that venues are just trying to stop fraudulent behavior. The company said it would conduct its own investigation into what happened, and in the meantime, ticketholders are encouraged to reach out as soon as possible to receive a refund as a part of their “fan ticket guarantee” policy.

The No Filter Tour continues tonight with a gig in Glendale, Arizona before the tour wraps-up in Miami, Florida this weekend. Their tour consisted of a variety of openers, including blues musician Gary Clark Jr. and indie-rock group The Wombats. Tonight, “Way Down” singer Kaleo will provide support, while Colombian rocker Juanes will open the show on Saturday.

Visit Ticket Club to find tickets to see The Rolling Stones on tour this year

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