From b3b5c9a80a9ce6ca7c8bfcacf9df20243e3968d7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=80ngel=20=C3=80lvarez?= <angel@nan-tic.com>
Date: Mon, 26 Sep 2022 10:49:14 +0200
Subject: [PATCH] check if exists purchases to process

---
 operation.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/operation.py b/operation.py
index b8b6bad..436a5cf 100644
--- a/operation.py
+++ b/operation.py
@@ -517,7 +517,8 @@ class OperationSubcontrat(metaclass=PoolMeta):
                     purchase=purchase.rec_name))
 
         super().done(operations)
-        Purchase.process(purchases)
+        if purchases:
+            Purchase.process(purchases)
 
     @classmethod
     def copy(cls, operations, default=None):