下发bug

src/views/check/index.vue

@@ -152,6 +152,7 @@
         </el-row>
 
         <el-table
+        
           v-loading="loading"
           :data="pageData"
           @selection-change="handleSelectionChange"
@@ -159,7 +160,7 @@
           :tree-props="{ children: 'children' }"
         >
           <el-table-column
-            prop="index"
+          type = 'index'
             label="序号"
             width="80px"
             v-if="columns[0].visible"