change some func:

app/views/inventory/inventory/_inventory_list.html.erb

@@ -28,7 +28,13 @@
       </td>
       <td><%= item.min_order_level %></td>
       <td><%= item.max_stock_level %></td>
-      <td><%= item.balance rescue '0' %></td>
+      <td>
+        <% if item.balance.nil? %>
+          0
+        <% else %>
+          <%= item.balance rescue 0 %>
+        <% end %>
+      </td>
       <td>
         <button type="button" data-value="<%= item.id %>" class="btn bg-blue waves-effect btn-link show_track"><%= t("views.btn.show") %> <%= t("views.right_panel.detail.stock_check") %></button>
       </td>

app/views/inventory/inventory/show.html.erb

@@ -66,5 +66,9 @@
         <% end %>
       </tbody>
     </table>
+    <br>
+    <% if !@stock_journals.nil? && !@stock_journals.empty? %>
+       <%= paginate @stock_journals %>
+   <% end %>
   </div>
 </div>