Any time you see any science article -- especially cosmology stuff -- claim some law of nature is being "proved wrong" or breaking down or failing or anything like that.... it just means an edge case was found that has some tiny but statistically significant deviation from our models. It means there's a missing piece of the puzzle that until recently was so inconsequential that we didn't even know we were overlooking it, but that the rest of the picture is becoming so sharply focused that its absence can no longer be overlooked. Or it means the observational data simply had errors in it.
"THE SCIENTISTS WERE WRONG" in all of its various forms makes for great clickbait, but it's only clickbait. We're highly, highly unlikely to be finding any new models for cosmology that totally upend our understanding of the universe as we continue to shine light through the fog at the edge of our understanding. There's vanishingly few cases of a scientist being genuinely wrong, and even fewer cases where the theory they were wrong about has any meaningful mass appeal.
Articles like this one set my hackles up. I get it, but "an observed system does not move precisely according to the predictions of our current best models of general relativity" isn't much of a headline, especially when the research was published by a guy who's heavily invested in proving MOND right in spite of compelling evidence that dark matter exists and the modified mechanical formulas aren't needed.