Former One Direction singer Zayn Malik responded Sunday to fans who had expressed concern over the panic attack that forced him to cancel his performance at London’s Capital Summertime Ball a day earlier.

“Thank you for your kind messages of support,” the 23-year-old English singer tweeted. “It means a lot. X.”

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As well, his girlfriend, model Gigi Hadid, tweeted him a message Sunday expressing understanding and admiration. “”Z - I’ve seen the battles you go through and the way you fight to get to a place that allows you to get up there for your fans,” Hadid, 21, wrote. “Your bravery in those times makes me proud, but your honesty last night proved what you’re all about, being real. Human recognizes human. You made the best of the situation and have given your fans an opportunity to understand you better as a performer.

“Those who can find compassion now,” she continued, “are the ones that deserve to watch you continue to grow. We are all here to support you and make each experience easier. Your talent and good heart will never lead you wrong. Love you and so proud of you always :) xG.”

On Saturday, Malik had posted on Twitter and Instagram, “To all those people who have been waiting to see me perform . . . I flew into the UK last night to appear in my home country in front of my family, friends, and most importantly my UK fans. Unfortunately, my anxiety that has haunted me throughout the last few months around live performances has gotten the better of me . . . with the magnitude of the event, I have suffered the worst anxiety of my career. I cannot apologize enough but I want to be honest with everyone who has patiently waited to see me. I promise I will do my best to make this up to everybody I’ve let down today.”

He added, “I hope those who suffer anxiety will understand. And I hope those who don’t can empathise with my situation,” he said, using the British spelling.

In the United States, 18.1 percent of the adult population suffers from one of a wide variety of anxiety disorders, according to The National Institute of Mental Health.