It looks like it was added to the Oxford English Dictionary 2 years ago:

https://www.bbc.com/news/uk-45763136

As a former colleague of me liked to quip - "The UK and the US are two countries divided by a common language."

Being a Scot, he usually followed up with a "They should settle on Scottish as a compromise!"

I think it has its genesis in an old Wendys ad campaign “where’s the beef” poking fun at Macdonald’s.

So in the news it was popularized when talking heads surmised the whole “Russia collusion” was a “nothingburger”. It had no substance —harking back to “where’s the beef?”

Linus Sebastian from LTT uses it a lot, so it already made it to Canada. I think the closest translation to English (yeah, I know) would be "non-issue".