diff --git a/pos_product_catch_weight/static/src/js/models.js b/pos_product_catch_weight/static/src/js/models.js
index 970e5ff2..d929ec69 100755
--- a/pos_product_catch_weight/static/src/js/models.js
+++ b/pos_product_catch_weight/static/src/js/models.js
@@ -52,12 +52,15 @@ odoo.define("pos_product_catch_weight.models", function (require) {
 
         get_base_price:    function(){
             var rounding = this.pos.currency.rounding;
-            var valid_product_lot = this.pack_lot_lines.get_valid_lots();
             var lot_ratio_sum = 0.0;
 
-            for (var i=0; valid_product_lot && i < valid_product_lot.length; i++) {
-                lot_ratio_sum += valid_product_lot[i].get('lot_catch_weight_ratio');
+            if (this.pack_lot_lines && this.pack_lot_lines.get_valid_lots) {
+                var valid_product_lot = this.pack_lot_lines.get_valid_lots();
+                for (var i=0; i < valid_product_lot.length; i++) {
+                    lot_ratio_sum += valid_product_lot[i].get('lot_catch_weight_ratio');
+                }
             }
+
             var qty = this.get_quantity();
             if (lot_ratio_sum != 0.0) {
                 qty = lot_ratio_sum;
@@ -66,11 +69,15 @@ odoo.define("pos_product_catch_weight.models", function (require) {
         },
 
         get_all_prices: function(){
-            var valid_product_lot = this.pack_lot_lines.get_valid_lots();
             var lot_ratio_sum = 0.0;
-            for (var i=0; valid_product_lot && i < valid_product_lot.length; i++) {
-                lot_ratio_sum += valid_product_lot[i].get('lot_catch_weight_ratio');
+
+            if (this.pack_lot_lines && this.pack_lot_lines.get_valid_lots) {
+                var valid_product_lot = this.pack_lot_lines.get_valid_lots();
+                for (var i=0; i < valid_product_lot.length; i++) {
+                    lot_ratio_sum += valid_product_lot[i].get('lot_catch_weight_ratio');
+                }
             }
+
             var qty = this.get_quantity();
             var qty_ratio = 1.0
             if (lot_ratio_sum != 0.0) {
diff --git a/pos_product_catch_weight/static/src/xml/pos.xml b/pos_product_catch_weight/static/src/xml/pos.xml
index ffbea4f5..afc29367 100755
--- a/pos_product_catch_weight/static/src/xml/pos.xml
+++ b/pos_product_catch_weight/static/src/xml/pos.xml
@@ -24,30 +24,34 @@
 
     <t t-extend="Orderline">
         <t t-jquery=".info-list" t-operation="append">
-            <t t-set="lots" t-value="line.pack_lot_lines.get_valid_lots()"/>
-            <t t-if="lots" t-foreach="lots" t-as="lot">
-                <li class="info">
-                    -- <t t-esc="lot.get_lot_name()"/>
-                    <t t-if="lot.get('lot_catch_weight_uom_id')">
-                        @ <t t-esc="lot.get('lot_catch_weight')"/>
-                        <t t-esc="lot.get('lot_catch_weight_uom_id')[1]"/>
-                    </t>
-                </li>
+            <t t-if="line.pack_lot_lines and line.pack_lot_lines.get_valid_lots">
+                <t t-set="lots" t-value="line.pack_lot_lines.get_valid_lots()"/>
+                <t t-if="lots" t-foreach="lots" t-as="lot">
+                    <li class="info">
+                        -- <t t-esc="lot.get_lot_name()"/>
+                        <t t-if="lot.get('lot_catch_weight_uom_id')">
+                            @ <t t-esc="lot.get('lot_catch_weight')"/>
+                            <t t-esc="lot.get('lot_catch_weight_uom_id')[1]"/>
+                        </t>
+                    </li>
+                </t>
             </t>
         </t>
     </t>
 
     <t t-extend="PosTicket">
         <t t-jquery=".receipt-orderlines tr td:nth-child(1)" t-operation="append">
-            <br/>
-            <t t-set="lots" t-value="orderline.pack_lot_lines.get_valid_lots()"/>
-            <t t-if="lots" t-foreach="lots" t-as="lot">
-                    -- <t t-esc="lot.get_lot_name()"/>
-                    <t t-if="lot.get('lot_catch_weight_uom_id')">
-                        @ <t t-esc="lot.get('lot_catch_weight')"/>
-                        <t t-esc="lot.get('lot_catch_weight_uom_id')[1]"/>
-                    </t>
+            <t t-if="orderline.pack_lot_lines and orderline.pack_lot_lines.get_valid_lots">
                 <br/>
+                <t t-set="lots" t-value="orderline.pack_lot_lines.get_valid_lots()"/>
+                <t t-if="lots" t-foreach="lots" t-as="lot">
+                        -- <t t-esc="lot.get_lot_name()"/>
+                        <t t-if="lot.get('lot_catch_weight_uom_id')">
+                            @ <t t-esc="lot.get('lot_catch_weight')"/>
+                            <t t-esc="lot.get('lot_catch_weight_uom_id')[1]"/>
+                        </t>
+                    <br/>
+                </t>
             </t>
         </t>
     </t>