From 1713b6e4e9504af7d0f850e9394f657fdf4c0f98 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Adri=C3=A1n=20Bernardi?= <abernardi@kalenislims.com>
Date: Sat, 2 Jan 2021 10:23:16 -0300
Subject: [PATCH] lims_sale: fix invoice line generation

---
 lims_sale/sample.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lims_sale/sample.py b/lims_sale/sample.py
index d1cc3a8f..61dd8a1b 100644
--- a/lims_sale/sample.py
+++ b/lims_sale/sample.py
@@ -101,6 +101,8 @@ class Service(metaclass=PoolMeta):
 
     def get_invoice_line(self, invoice_type):
         invoice_line = super().get_invoice_line(invoice_type)
+        if not invoice_line:
+            return
         if self.sample.sale_lines:
             for sale_line in self.sample.sale_lines:
                 if sale_line.product.id == self.analysis.product.id: