Fifth Harmony fans started to worry about Camila Cabello after she had left the stage — and never returned — in the middle of the girl group’s set at their concert in St. Louis, Mo., on Friday, Sept. 2.

St. Louis Post-Dispatch reported that Cabello walked offstage immediately after their performance of “Bo$$,” despite having seven songs left in their set. One of her group mates reportedly explained to the concertgoers that Cabello had experienced a wardrobe malfunction, but the “I Know What You Did Last Summer” songstress was noticeably absent until the group’s final performance.

After several fans expressed their concerns for Cabello on social media, the Cuban-born singer took to Snapchat to apologize and explained what had really happened. According to E! News, Cabello wrote: “Hi Missouri, sorry I couldn’t finish the set last night. Was having too much anxiety and couldn’t finish it. I love u. I’m truly sorry.”

In a tweet before the concert, Cabello suggested that she was not feeling well. “Just wanna sleep for 3 days,” the singer wrote. ‘

Cabello, 19, is expected to return to the stage during the group’s concert at Gexa Energy Pavilion in Dallas Texas on Sunday night. After that show, The “X Factor USA” alums will then take a two-week break before their 7/27 Tour resumes on Sept. 11.

Cabello recently made headlines after she teamed up with music producer Benny Blanco earlier this year for a solo song. Despite this solo project, Cabello’s bandmate Normani Kordei dismissed rumors that Fifth Harmony is heading to a split.

“For those of you who enjoy speculating and creating drama that doesn't exist, please keep in mind that myself and the other girls in the group are PEOPLE,” Kordei wrote on Twitter earlier this month. “We feel hurt and sadness just like everyone else.”

“The smartest thing you can do is recognize that making assumptions and passing judgment on others is wrong,” she added. “I am here to offer great music and performance along with my girls. This is our story so let us write it our way, instead of you trying to write it for us.”

Read Kordei’s full statement below:

Camila Cabello Fifth Harmony member Camila Cabello took to Snapchat to apologize for leaving the group’s St. Louis concert early. Pictured: Cabello performs onstage during KISS 108’s Jingle Ball 2013, at TD Garden on Dec. 14, 2013 in Boston, Mass. Photo: Getty Images/Mike Coppola