The bassist did not specify which band member is ailing in response to a fan question about their absence from the Back to the Beginning lineup.

Ozzy Osbourne is saying goodbye to the stage after performing what has been billed as his final show with the original members of Black Sabbath.

On July 5, Ozzy performed his final concert — titled “Back to the Beginning” — with his band Black Sabbath. It was the first time the singer had reunited with the group in 20 years.