修复：

1.代客下单先付费下直接点扫码支付获取支付链接失败
2.修复清空购物车删除因为报错导致购物车清空事变

src/views/tool/Instead/index.vue

@@ -1166,7 +1166,7 @@
 
     <return-cart
       ref="refReturnCart"
-      :max="order.selGoods.number"
+      :max="order.selGoods?order.selGoods.number:1"
       @confirm="refReturnCartConfirm"
     ></return-cart>
   </div>
@@ -1856,9 +1856,10 @@ export default {
         return;
       }
       await this.returnCreateOrderData();
-      this.payBeforeClear();
+      console.log( this.createOrder.data )
       this.order.payType = "scanCode";
       this.payTypeItemClick({ payType: "scanCode" });
+      this.payBeforeClear();
     },
     async changeOrderUseType(useType) {
       if (useType && this.order.list.length) {
@@ -2047,7 +2048,7 @@ export default {
       }
       if (item.payType == "scanCode") {
         //扫码支付
-        return this.refToggle("refWxScanCode", true);
+        return this.refToggle("refWxScanCode", true,this.createOrder.data);
       }
     },
     ChangeDiscount(discount) {
@@ -2181,7 +2182,7 @@ export default {
         return this.refChooseUserOpen();
       }
       if (this.order.payType == "scanCode") {
-        return this.refToggle("refWxScanCode", true);
+        return this.refToggle("refWxScanCode", true,this.createOrder.data);
       }
       if (this.order.payType == "deposit") {
         return this.refToggle("refScanCode", true);