【HELP】Cinemachine no longer follows

Today, I tried to create different scenes for the same content, and then I made the camera and player into prefabs. However, during runtime, Cinemachine returns to the player’s position, but it doesn’t follow the player when it moves. Additionally, after running, the “Follow” and “Look At” fields become “None”. I searched online but couldn’t find a solution. Please help and thank you very much。
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