fix timer

src/views/photoManagement/eventsList/modal/ItemModal.vue

@@ -34,6 +34,7 @@
           range-separator="至"
           start-placeholder="开始日期"
           end-placeholder="结束日期"
+          value-format="yyyy-MM-dd HH:mm:ss"
         >
         </el-date-picker>
       </el-form-item>