I built a Connect 4 game with Pygame and am trying to get it to run in a browser using pygbag, but I keep getting a page unresponsive error. When I try to run it in a browser there is a start button, and when I click that I get to see the connect 4 board, but then I get the page unresponsive error. Let me know if you know what could be causing this error. Here is my code for the main game loop:

async def main():
    game_over = False
    turn = AI
    while not game_over:

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit()

            if event.type == pygame.MOUSEMOTION:
                pygame.draw.rect(screen, BLACK, (0, 0, width, SQUARESIZE))
                posx = event.pos[0]
                if turn == PLAYER:
                    pygame.draw.circle(screen, RED, (posx, int(SQUARESIZE / 2)), RADIUS)

            pygame.display.update()

            if event.type == pygame.MOUSEBUTTONDOWN:
                pygame.draw.rect(screen, BLACK, (0, 0, width, SQUARESIZE))
                # print(event.pos)
                # Ask for Player 1 Input
                if turn == PLAYER:
                    posx = event.pos[0]
                    col = int(math.floor(posx / SQUARESIZE))

                    if is_valid_location(board, col):
                        row = get_next_open_row(board, col)
                        drop_piece(board, row, col, PLAYER_PIECE)

                        if winning_move(board, PLAYER_PIECE):
                            label = myfont.render("Player 1 wins!!", 1, RED)
                            screen.blit(label, (40, 10))
                            game_over = True

                        turn += 1
                        turn = turn % 2

                        # print_board(board)
                        draw_board(board)

        # # Ask for Player 2 Input
        if turn == AI and not game_over:

            # col = random.randint(0, COLUMN_COUNT-1)
            # col = pick_best_move(board, AI_PIECE)
            col, minimax_score = minimax(board, 5, -math.inf, math.inf, True)

            if is_valid_location(board, col):
                # pygame.time.wait(500)
                row = get_next_open_row(board, col)
                drop_piece(board, row, col, AI_PIECE)

                if winning_move(board, AI_PIECE):
                    label = myfont.render("Player 2 wins!!", 1, YELLOW)
                    screen.blit(label, (40, 10))
                    game_over = True

                # print_board(board)
                draw_board(board)

                turn += 1
                turn = turn % 2

        if game_over:
            pygame.time.wait(3000)
    await asyncio.sleep(0)

asyncio.run(main())