Stuck at first frame

I know it is too late but I’d be very grateful if someone could/would reply.
What could be reasons for my game to be stuck at first frame? Whenever I run PlayerView.java, I get the following :
Capture

The player view performs game.step in regular intervals.
If nothing happens, your step implementation is possibly wrong.
Or you do not update the board/game instance correctly.

I had the same issue. What I did wrong was that I, whenever I made a move, changed the board instance my game was running on. The project doesn’t mention it, but you need to keep the board consistent for god knows what reason.

Then it is the same issue as here:

It was one design decision to reuse the board.
But we will probably change the GUI to use getBoard instead of reusing an instance in the future.