The 19-year-old "Work From Home" hitmaker took to Snapchat to describe the whole incident and said she was having too much anxiety while performing at the concert in Missouri, US.
"Hi Missouri, sorry I couldn't finish the set last night. Was having too much anxiety and couldn't finish it. I love you. I'm truly sorry. (sic)," she wrote.
The singer has previously also revealed that she suffered from non-stop anxiety attacks during their rise to fame.