From fcdb40dda08d1c1a4676a7cf1b84eb8981686a05 Mon Sep 17 00:00:00 2001
From: Raphael Michel <mail@raphaelmichel.de>
Date: Thu, 27 Feb 2020 16:28:07 +0100
Subject: [PATCH] Refs #1593 -- Fix subsequent issue when clearing the cart

---
 src/pretix/base/services/cart.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/pretix/base/services/cart.py b/src/pretix/base/services/cart.py
index 58c44334e5..b54bb56114 100644
--- a/src/pretix/base/services/cart.py
+++ b/src/pretix/base/services/cart.py
@@ -773,6 +773,9 @@ class CartManager:
 
         err = None
         for item, count in items.items():
+            if count == 0:
+                continue
+
             if item.max_per_order and count > item.max_per_order:
                 raise CartError(
                     _(error_messages['max_items_per_product']) % {