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Bloomberg posted a headline saying "Russia Invades Ukraine," according to screenshots shared on Twitter. Olga Lautman/Twitter

Bloomberg made a blunder.

The financial news site accidentally reported that Russia had invaded Ukraine Friday afternoon with a headline on its homepage.

“Live: Russia invades Ukraine,” read a jarring headline on Bloomberg’s homepage at around 4 p.m.

It stayed up for about 30 minutes, according to Olga Lautman, a Russian analyst who posted the message on social media.

Users who clicked on the eye-popping story — which comes as Russian troops mass on the Ukrainian border and US officials warn of a potential invasion — were shown an error page.

“I went on the site and saw the breaking news but knew it wasn’t real because I deal with Ukraine and will be one of the first to know,” Lautman told The Post. “It is bizarre and a pretty big mistake to make considering this is a potential large scale invasion and everyone is on edge.”

Reached for comment by The Post, Bloomberg said that it had accidentally posted a pre-written headline.

“We prepare headlines for many scenarios and one of those headlines was inadvertently published at around 4 PM ET today on our website,” a Bloomberg News spokesperson wrote in an email. “We deeply regret the error.”