写在最前面：每个Unity开发者都经历过的崩溃瞬间凌晨两点。你，盯着屏幕。眼睛，已经发红。项目，明天就要交。然后，你打开Unity。然后，它报错了。Error: Failed to load assembly 'Assembly-CSharp.dll' UnityEditor.BuildPlayerWindow+BuildMethodException Assets/Scripts/PlayerController.cs(23,14): error CS0246: The type or namespace name 'UnityEngine.InputSystem' could not be found Library/PackageCache/com.unity.render-pipelines.universal @12.1.7/Runtime/Data/UniversalRenderPipelineAsset.cs: error CS0012: The type 'ScriptableObject' is defined in an assembly that is not referenced.你，看着这一堆红色的错误，脑子里，一片空白。你，没有改任何代码。你，没有动任何设置。你，只是，关闭了Unity，