fix: 山东养护导出电子标问题

web/building_saas/standard_interface/export/guangxi_common.js

@@ -181,7 +181,7 @@ INTERFACE_EXPORT = (() => {
   }
 
   function _billStrFilter(billStr) {
-    let rst = billStr;
+    let rst = billStr || '';
     if (typeof billStr === 'string') {
       rst = billStr.replace(reg1, '').replace(reg2, '').replace(reg3, '').replace(reg4, '').replace(reg5, '(').replace(reg6, ')');
     }

web/building_saas/standard_interface/export/shandong_common.js

@@ -190,7 +190,7 @@ INTERFACE_EXPORT = (() => {
   }
 
   function _billStrFilter(billStr) {
-    let rst = billStr;
+    let rst = billStr || '';
     if (typeof billStr === 'string') {
       rst = billStr.replace(reg1, '').replace(reg2, '').replace(reg3, '').replace(reg4, '').replace(reg5, '(').replace(reg6, ')');
     }