U2 apologises for cancelling berlin concert

I'm not aware of any information about U2 cancelling a concert in Berlin and subsequently apologizing for it. U2 is a popular Irish rock band that has been active since the 1970s and has performed numerous concerts around the world, including in Berlin, Germany.

However, it's possible that you may be thinking of a specific concert or tour that was cancelled or postponed due to unforeseen circumstances. If that's the case, I'd be happy to try to help you find more information about it.

Could you please provide more context or details about the concert you're referring to, such as the date, location, and any other relevant information you may have?