feat(src/packages): 信息下的单个摄像头 修改报错问题

@@ -28,8 +28,8 @@ const option = shallowReactive({
 watch(
   () => dataset?.value,
   (newData: string) => {
-    if (url.value) {
-      option.dataset = url.value
+    if (url?.value) {
+      option.dataset = url?.value
     } else {
       option.dataset = newData
     }