Is this a new kind of cheats when playing online? Why the game just suddenly stoped and returned to the menu showing this error whenever I'm about to crush the opponent?

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https://preview.redd.it/gt4zlio1kar61.png?width=1920&format=png&auto=webp&s=795a48a27902eda5cb634d8497dd7db73186c9f8

Is this a new kind of cheats when playing online? Why the game just suddenly stopped and returned to the menu showing this error whenever I'm about to crush the opponent? This happened twice these days. And then I lost my elo; very frustrating.