fix 报错处理

 <!--
  * @Date: 2022-07-18 10:22:22
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2024-07-22 17:30:54
+ * @LastEditTime: 2024-07-22 18:56:55
  * @FilePath: /data-table/src/views/index.vue
  * @Description: 首页
 -->
@@ -835,7 +835,7 @@ const checkRules = () => {
       let condition = '';
       // 多个规则的满足条件，为全且或者全或
       const op = item.field_rules?.logical_op === 'AND' ? '&&' : '||';
-      item.field_rules?.expr_list.forEach(expr => {
+      item.field_rules?.expr_list?.forEach(expr => {
         let form_submission_value = postData.value[expr['field_name']]; // 表单提交值, field_12 : "" || field_13 : []
         let rule_matching_value = expr['values']; // 规则匹配值 values : ['x']
         if (typeof form_submission_value === 'string') { // 表单值为字符串（单选，下拉）
@@ -849,7 +849,7 @@ const checkRules = () => {
         }
         if (typeof form_submission_value === 'object') { // 表单值为数组（多选）
           // 处理多选项带补充信息时判断，去除补充信息
-          form_submission_value = form_submission_value.map(item => {
+          form_submission_value = form_submission_value?.map(item => {
               if (item.includes(':')) {
                 return item.split(':')[0].trim();  // 去除冒号及其后面的部分并去除前后空格
               }