“These are challenging times with challenging decisions that have to be made. I want everyone to be safe and healthy, and the rising COVID cases should be of concern to all of us. While I’m vaccinated, at my age, I am still being extremely cautious and for that reason have decided to skip the five performances I had planned for 2021. Because singing and performing have been my whole life, my primary goal is to keep healthy so I can continue singing for the next decade or longer. I’m devastated and I know the fans are disappointed, but we will look toward a brighter 2022.”

https://pitchfork.com/news/stevie-nicks-cancels-2021-festival-dates-citing-rising-covid-19-cases