diff --git a/CHANGELOG.md b/CHANGELOG.md
index 65efedbe..0d1898a7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -57,6 +57,7 @@
 
 ## master
 
+* (2022.07.29) 修复在某些`Unity`版本导入后图表创建异常的问题
 * (2022.07.29) 增加`Axis`为`Time`时间轴时，支持次刻度和次分割线
 * (2022.07.28) 优化`Radar`雷达图效果
 * (2022.07.28) 增加`Serie`的`colorBy`参数配置取色策略
diff --git a/Runtime/Internal/XCThemeMgr.cs b/Runtime/Internal/XCThemeMgr.cs
index 86c239cc..a30148a1 100644
--- a/Runtime/Internal/XCThemeMgr.cs
+++ b/Runtime/Internal/XCThemeMgr.cs
@@ -56,9 +56,16 @@ namespace XCharts.Runtime
         {
             if (!XChartsMgr.themes.ContainsKey(themeName))
             {
-                return null;
+                ReloadThemeList();
+                if (XChartsMgr.themes.ContainsKey(themeName))
+                    return XChartsMgr.themes[themeName];
+                else
+                    return null;
+            }
+            else
+            {
+                return XChartsMgr.themes[themeName];
             }
-            return XChartsMgr.themes[themeName];
         }
 
         public static Theme LoadTheme(ThemeType type)
diff --git a/Runtime/Serie/SerieHelper.cs b/Runtime/Serie/SerieHelper.cs
index 696b09af..9373e8fd 100644
--- a/Runtime/Serie/SerieHelper.cs
+++ b/Runtime/Serie/SerieHelper.cs
@@ -282,7 +282,7 @@ namespace XCharts.Runtime
         public static void GetItemColor(out Color32 color, out Color32 toColor,
             Serie serie, SerieData serieData, ThemeStyle theme, SerieState state = SerieState.Auto)
         {
-            var colorIndex = serie.colorByData? serieData.index : serie.context.colorIndex;
+            var colorIndex = serieData != null && serie.colorByData? serieData.index : serie.context.colorIndex;
             GetItemColor(out color, out toColor, serie, serieData, theme, colorIndex, state, true);
         }