I am called a cheater

in a game it says cheat detected I lost what is the meaning of this?!

I DID NOT EVEN "CHEAT"

Here's the link to the game lichess.org/rvq5yZBjaNDM

@WizardR You are not marked as a cheater, but you probably opened the analysis board during the game.

how do I do it?

the game is not done

To me, it does not seem you cheated. Maybe you should contact the staff at Lichess, and ask for some explanation. Sorry for your trouble.

Just press tools in the top bar (or left 3 lines on a phone) @WizardR

"the game is not done"

Well you could hardly have used computer analysis during the game if the game had ended, could you?

yeah stockfish is now a little weird