Bryan Adams had to cancel a concert in Western Australia on Sunday night due to a large fatberg, which could cause the venue’s toilets to overflow.

According to CNN, the sold-out show was called off as workers tried to remove pools of water near the venue.

“Water Corporation crews are working to clear the large blockage of fat, grease and rags, which has caused several wastewater overflows” near the arena, the water company said in a statement, per CNN.

“People should avoid contact with any pooled water … as it may be sewage.”

Adams apologized to fans for the short-notice cancellation.

“I’m really sorry we couldn’t make this happen tonight — I was so looking forward to seeing you all,” he wrote on Facebook on Sunday. “I appreciate your patience and support and can’t wait to be back and play for you as soon as we can reschedule.”

Show organizers promised refunds for ticket holders, adding that the cancellation was out of their control.

“Last night’s concert could not proceed due to an external Perth Water Corporation issue, which was unable to be fixed in time,” booking agent Frontier Touring said Monday in a Facebook post, adding it was deemed “unsafe for patrons to enter RAC Arena.”

“The cancellation of (the) show is bitterly disappointing, and we thank fans for their understanding that while every effort was made for the show to proceed, this matter was outside of the control of Bryan Adams, Frontier Touring and RAC Arena,” the post said.

Mark Heim is a reporter for The Alabama Media Group. Follow him on Twitter @Mark_Heim. He can be heard on “The Opening Kickoff” on WNSP-FM 105.5 FM in Mobile or on the free Sound of Mobile App from 6 to 9 a.m. daily.