fix: 判空处理

pages/template/list-news/detail/detail.uvue

@@ -23,10 +23,11 @@
 			}
 		},
 		onLoad(event) {
-      // console.log(event);
-			this.post_id = event["post_id"] ?? "";
-			this.cover = event["cover"] ?? "";
-			this.title = event["title"] ?? "";
+      if (event != null) {
+        this.post_id = event["post_id"] ?? "";
+        this.cover = event["cover"] ?? "";
+        this.title = event["title"] ?? "";
+      }
 			this.getDetail();
 		},
 		methods: {