One would think that Ticketmaster would be on top of its game to avoid upsetting other fans after the Taylor Swift Eras tour disaster last month. But on Friday night, hundreds of Bad Bunny fans were turned away from the sold-out event at Mexico City’s Estadio Azteca, a stadium with an 87,000-person capacity.

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Photos of the stadium’s general admission field taken just before Bad Bunny’s performance revealed it to be almost half empty. Fans claimed that the venue informed them that their tickets were invalid.

While the concert proceeded as scheduled, many of the audience members expressed disappointment at not being able to see Benito in person and voiced additional worries about the way Ticketmaster manages stadium-sized events globally, especially with one more concert still tonight.

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What happened

Despite being sold out, Bad Bunny’s performance in Mexico City on December 9 was not at full capacity. For days prior to Friday’s performance, several fans camped overnight to guarantee they would get inside the venue on time.

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However, many spectators were turned away from the stadium for a variety of reasons, including false, duplicate, or cancelled tickets, according to security.

Despite purchasing their tickets straight from Ticketmaster, several fans even had their tickets removed at check-in because security believed they were using resold or fake tickets. Fans told CNN that despite their tickets being scanned with a green checkmark, indicating that they were legitimate, they were denied entry to the arena.

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Ticketmaster’s response

In a statement, Ticketmaster claimed that an unprecedented amount of bogus tickets had been distributed, confusing some attendees who had legitimate tickets. If there was an electronic record proving the fans couldn’t enter, they were instructed to contact Ticketmaster to get a refund for their tickets.

The venue, Estadio Azteca, issued a statement of its own stating that any ticket duplicated became invalid, leading to the cancellation of those having tickets purchased from Ticketmaster.

Regarding the concert on Saturday night, Ticketmaster said it is taking precautions for tonight’s performance and advised fans to follow Ticketmaster channels for any updates.