修复线上匹配

src/components/FinancialModule/addReceivablesDocuments.vue

@@ -803,9 +803,9 @@ export default {
                     if(wechat==null&&zhifu==null&&barcode==""){
                           return;  
                     }
-                    if(zhifu==null&&wechat!=null&&wechat.length>20){
+                    if(zhifu==null&&wechat!=null&&wechat.length>0&&wechat[wechat.length-1].length>20){
                         this.setCode = wechat[wechat.length-1].replace('商户单号','');
-                    }else if(wechat==null&&zhifu!=null&&zhifu.length>20){
+                    }else if(wechat==null&&zhifu!=null&&zhifu.length>0&&zhifu[zhifu.length-1].length>20){
                         this.setCode = zhifu[zhifu.length-1].replace('商家可扫码退款或查询交易','');
                     }else if(barcode!=""){
                         this.setCode=barcode;