Other fans said they were concerned for 77-year-old Birmingham music legend Lynne, who had been performing without his guitar since Saturday after injuring his hand in a taxi crash.
Some had commented that he did not look well during the first of the two planned gigs on Wednesday.
“I just hope he’s ok,” one fan who travelled from Aberdeen said.
“In the 1970s my first cassette album was ELO and I was looking forward to seeing Jeff Lynne, but the guy’s ill so what can you say I just hope he’s ok.”
ELO had major hits in the 1970s with songs including Living Thing and Mr Blue Sky.
Lynne has also had success as a producer, working on the Beatles’ comeback singles Free As A Bird and Real Love in the 1990s.