The creation disappeared after restarting the game.

I made a zombie piglin trap at sea and it was running, but it fell off with the message "Your device does not have enough capacity", probably because it exceeded the capacity.  Therefore, I restarted it, but after restarting, I spown it a completely different place from the place of the device, and when I returned to the place where the device was, all the works that were there disappeared and only the sea was left. 

 As you can see from the attached screenshot, such a device was originally placed, but as shown in the following picture, all the devices are gone like this.