New Kids On The Block
Credit: Christie Goodwin/Redferns/Getty Images

New Kids on the Block have a lot going on in 2013: They just dropped a brand new album called 10, booked a big-ticket cruise, and are headed out on tour with Boyz II Men and 98 Degrees.

But their long road already hit its first speedbump. Last night, during a performance at New York City’s iHeartRadio Theater, Jonathan Knight left the stage suddenly without explanation.

Later on Twitter, he apologized to fans who were there to see the classic boy band perform.

The remainder of the group rolled with it, making jokes about Knight needing to use the bathroom and lending words of support to their comrade. “We love Jonathan and he loves us,” Joey McIntyre told the crowd.

Knight has notably struggled with anxiety throughout his life—he famously went on Oprah to talk about his experiences with anxiety disorder.

It’s unclear how his latest incident will affect NKOTB’s schedule moving forward. They will play the Sutter Home Winery in Saint Helena, CA this Sunday, April 7; the next opportunity you’ll have to see them is when their cruise sets sail from Miami on May 18.