fix

com.unity.uiwidgets/Runtime/engine2/UIWidgetsPanelWrapper.cs

 
             _width = width;
             _height = height;
-            _devicePixelRatio = devicePixelRatio;
+            devicePixelRatio = devicePixelRatio;
         }
 
         void _destroyRenderTexture() {
 
         void _enableUIWidgetsPanel(string font_settings) {
             UIWidgetsPanel_onEnable(_ptr, _renderTexture.GetNativeTexturePtr(),
-                _width, _height, _devicePixelRatio, Application.streamingAssetsPath, font_settings);
+                _width, _height, devicePixelRatio, Application.streamingAssetsPath, font_settings);
-                _width, _height, _devicePixelRatio);
+                _width, _height, devicePixelRatio);
         }
 
         void _disableUIWidgetsPanel() {

com.unity.uiwidgets/Runtime/foundation/debug.cs

 using System.Linq;
 using Unity.UIWidgets.painting;
 using Unity.UIWidgets.ui;
+#if UNITY_EDITOR
+#endif
 using UnityEngine;
 using Canvas = Unity.UIWidgets.ui.Canvas;
 using Color = Unity.UIWidgets.ui.Color;
             Debug.LogException(new AssertionError(message: message, innerException: ex));
         }
 
+        #if UNITY_EDITOR
+        #endif
-
+#if UNITY_EDITOR
+        #endif
         public static void assert(bool result, Func<string> message = null) {
             if ( enableDebug && !result  ) {
                 throw new AssertionError(message != null ? message() : "");
                 PlayerPrefs.SetInt("UIWidgetsDebug",value ? 1 : 0);
             }
         }
-        
+#if UNITY_EDITOR
-        
+#endif
+
+#if UNITY_EDITOR
-        }
+        }     
+#endif
+
         public static void _debugDrawDoubleRect(Canvas canvas, Rect outerRect, Rect innerRect, Color color) { 
             var path = new Path();
             path.fillType = PathFillType.evenOdd;