The pilleger attack in the village disappeared when I left the game!

Hello, I was in a village and some looters showed up. I killed the leader and the attack reached the village, but as my cell phone was very slow, I left the game to optimize it. When I returned, the attacking crowds had disappeared, the attack bar still appears, but there is no attack. I summoned some looters by code to kill, but the deaths did not count in the attack bar.