之前的步骤都是按照binary老师的教程做的

报错信息：

DirectoryNotFoundException: Could not find a part of the path ‘E:\Project\MyProject\ET-master\ET-master\Unity\Assets\StreamingAssets’.

System.IO.Enumeration.FileSystemEnumerator`1[TResult].CreateDirectoryHandle (System.String path, System.Boolean ignoreNotFound) (at <7b935204f5ff4bcab44b3b0ebca330bf>:0)

System.IO.Enumeration.FileSystemEnumerator`1[TResult]..ctor (System.String directory, System.IO.EnumerationOptions options) (at <7b935204f5ff4bcab44b3b0ebca330bf>:0)

System.IO.Enumeration.FileSystemEnumerable`1+DelegateEnumerator[TResult]..ctor (System.IO.Enumeration.FileSystemEnumerable`1[TResult] enumerable) (at <7b935204f5ff4bcab44b3b0ebca330bf>:0)

System.IO.Enumeration.FileSystemEnumerable`1[TResult]..ctor (System.String directory, System.IO.Enumeration.FileSystemEnumerable`1+FindTransform[TResult] transform, System.IO.EnumerationOptions options) (at <7b935204f5ff4bcab44b3b0ebca330bf>:0)

System.IO.Enumeration.FileSystemEnumerableFactory.UserDirectories (System.String directory, System.String expression, System.IO.EnumerationOptions options) (at <7b935204f5ff4bcab44b3b0ebca330bf>:0)

System.IO.Directory.InternalEnumeratePaths (System.String path, System.String searchPattern, System.IO.SearchTarget searchTarget, System.IO.EnumerationOptions options) (at <7b935204f5ff4bcab44b3b0ebca330bf>:0)

System.IO.Directory.GetDirectories (System.String path, System.String searchPattern, System.IO.EnumerationOptions enumerationOptions) (at <7b935204f5ff4bcab44b3b0ebca330bf>:0)

System.IO.Directory.GetDirectories (System.String path) (at <7b935204f5ff4bcab44b3b0ebca330bf>:0)

ET.FileHelper.CleanDirectory (System.String dir) (at Assets/Mono/Core/Helper/FileHelper.cs:26)

ET.BuildHelper.Build (ET.PlatformType type, UnityEditor.BuildAssetBundleOptions buildAssetBundleOptions, UnityEditor.BuildOptions buildOptions, System.Boolean isBuildExe, System.Boolean isContainAB, System.Boolean clearFolder) (at Assets/Editor/BuildEditor/BuildHelper.cs:56)

ET.BuildEditor.OnGUI () (at Assets/Editor/BuildEditor/BuildEditor.cs:104)

UnityEditor.HostView.InvokeOnGUI (UnityEngine.Rect onGUIPosition) (at <a438e36f0ae54291a470e9e4b587e642>:0)

UnityEditor.DockArea.DrawView (UnityEngine.Rect dockAreaRect) (at <a438e36f0ae54291a470e9e4b587e642>:0)

UnityEditor.DockArea.OldOnGUI () (at <a438e36f0ae54291a470e9e4b587e642>:0)

UnityEngine.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt, UnityEngine.Matrix4×4 parentTransform, UnityEngine.Rect clippingRect, System.Boolean isComputingLayout, UnityEngine.Rect layoutSize, System.Action onGUIHandler, System.Boolean canAffectFocus) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, UnityEngine.Matrix4×4 worldTransform, UnityEngine.Rect clippingRect, System.Action onGUIHandler, System.Boolean canAffectFocus) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, System.Action onGUIHandler, System.Boolean canAffectFocus) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, System.Boolean canAffectFocus) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.IMGUIContainer.SendEventToIMGUIRaw (UnityEngine.UIElements.EventBase evt, System.Boolean canAffectFocus, System.Boolean verifyBounds) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.IMGUIContainer.SendEventToIMGUI (UnityEngine.UIElements.EventBase evt, System.Boolean canAffectFocus, System.Boolean verifyBounds) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.IMGUIContainer.HandleEvent (UnityEngine.UIElements.EventBase evt) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.CallbackEventHandler.HandleEventAtTargetPhase (UnityEngine.UIElements.EventBase evt) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.MouseCaptureDispatchingStrategy.DispatchEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.EventDispatcher.ApplyDispatchingStrategies (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel, System.Boolean imguiEventIsInitiallyUsed) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.EventDispatcher.ProcessEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.EventDispatcher.ProcessEventQueue () (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.EventDispatcher.OpenGate () (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.EventDispatcherGate.Dispose () (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.EventDispatcher.ProcessEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.EventDispatcher.Dispatch (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel, UnityEngine.UIElements.DispatchMode dispatchMode) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.BaseVisualElementPanel.SendEvent (UnityEngine.UIElements.EventBase e, UnityEngine.UIElements.DispatchMode dispatchMode) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.UIElementsUtility.DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel panel) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.UIElementsUtility.UnityEngine.UIElements.IUIElementsUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr, System.Boolean& eventHandled) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.UIEventRegistration.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.UIElements.UIEventRegistration+<>c.<.cctor>b__1_2 (System.Int32 i, System.IntPtr ptr) (at <2e3c4b83d19b41f8b681055d339b3b16>:0)

UnityEngine.GUIUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr, System.Boolean& result) (at <8d72946ec8654767a731b36883d11eaa>:0)