diff --git a/plugins/stats_dashboard/templates/robot_management.html b/plugins/stats_dashboard/templates/robot_management.html
index ac6c984..43f5cc0 100644
--- a/plugins/stats_dashboard/templates/robot_management.html
+++ b/plugins/stats_dashboard/templates/robot_management.html
@@ -247,7 +247,8 @@
                 trendData: {
                     dates: [],
                     counts: []
-                }
+                },
+                charts: {}  // 保留charts对象，以防其他地方还在使用
             }
         },
         computed: {
@@ -261,25 +262,28 @@
             },
             // 计算属性用于趋势数据
             totalMessages() {
+                if (!this.trendData || !this.trendData.counts) return 0;
                 return this.trendData.counts.reduce((sum, count) => sum + parseInt(count || 0), 0);
             },
             avgMessages() {
-                return this.trendData.dates.length > 0 ? 
-                    (this.totalMessages / this.trendData.dates.length).toFixed(2) : 0;
+                if (!this.trendData || !this.trendData.dates || this.trendData.dates.length === 0) return 0;
+                return (this.totalMessages / this.trendData.dates.length).toFixed(2);
             },
             maxMessages() {
-                return this.trendData.counts.length > 0 ? 
-                    Math.max(...this.trendData.counts.map(c => parseInt(c || 0))) : 0;
+                if (!this.trendData || !this.trendData.counts || this.trendData.counts.length === 0) return 0;
+                return Math.max(...this.trendData.counts.map(c => parseInt(c || 0)));
             },
             minMessages() {
-                return this.trendData.counts.length > 0 ? 
-                    Math.min(...this.trendData.counts.map(c => parseInt(c || 0))) : 0;
+                if (!this.trendData || !this.trendData.counts || this.trendData.counts.length === 0) return 0;
+                return Math.min(...this.trendData.counts.map(c => parseInt(c || 0)));
             },
             maxDay() {
+                if (!this.trendData || !this.trendData.counts || !this.trendData.dates) return '';
                 const maxIndex = this.trendData.counts.indexOf(this.maxMessages.toString());
                 return maxIndex >= 0 ? this.trendData.dates[maxIndex] : '';
             },
             minDay() {
+                if (!this.trendData || !this.trendData.counts || !this.trendData.dates) return '';
                 const minIndex = this.trendData.counts.indexOf(this.minMessages.toString());
                 return minIndex >= 0 ? this.trendData.dates[minIndex] : '';
             }
@@ -530,6 +534,7 @@
             
             // 计算百分比的方法
             getPercentage(index) {
+                if (!this.trendData || !this.trendData.counts) return 0;
                 const count = parseInt(this.trendData.counts[index] || 0);
                 return this.totalMessages > 0 ? 
                     ((count / this.totalMessages) * 100).toFixed(2) : 0;