Lil Uzi Vert didn't show at the 2017 Soundset Festival in Minnesota this weekend. The Atlanta rapper was supposed to take the stage on Sunday, but inexplicably didn't appear--and it enraged many attendees.

Soundset is Minnesota’s premiere festival event, and this year featured a ton of the hottest names in hip-hop, including Travis Scott, Talib Kweli, Pusha T, Atmosphere, Ty Dolla $ign, T.I., Lauryn Hill and Dave East. Just days before the festival, Mac Miller pulled out of his performance.

"Soundset and Sasquatch, I will not be performing this weekend," Miller tweeted on May 26. "Thank you for understanding. I'll be back. Love always."

Miller's announcement came after a terrorist attack at his girlfriend Ariana Grande's Manchester Arena show killed 22 people. Miller has reportedly been with Grande since she returned to the U.S. following the tragedy. So his not making his festival dates was totally understandable.

Uzi gave no explanation for his absence. Fans expressed their disgust via Twitter.

“F--- Lil Uzi on some real shit, can’t show up to Soundset?,” one person tweeted. “Lil uzi not showing up to soundset really put a hurt in my day,” someone else posted.

Uzi's only semi-statement was a random tweet that made it sound like he was stressed or confused.

“My brain … I’m going crazy 👹..2®," he tweeted.

You can peep Uzi's cryptic tweet and fan reactions below: