From e7740b17357f55238e597e95b98a453b751f7c76 Mon Sep 17 00:00:00 2001
From: Raphael Michel <mail@raphaelmichel.de>
Date: Mon, 17 Aug 2020 09:39:59 +0200
Subject: [PATCH] Fix crash on addons without tax rule PRETIXEU-2MZ

---
 src/pretix/presale/checkoutflow.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pretix/presale/checkoutflow.py b/src/pretix/presale/checkoutflow.py
index 00cef0c08a..e6108e4d99 100644
--- a/src/pretix/presale/checkoutflow.py
+++ b/src/pretix/presale/checkoutflow.py
@@ -285,7 +285,7 @@ class AddOnsStep(CartMixin, AsyncAction, TemplateFlowStep):
                                 net=a.price - a.tax_value,
                                 gross=a.price,
                                 tax=a.tax_value,
-                                name=a.item.tax_rule.name,
+                                name=a.item.tax_rule.name if a.item.tax_rule else "",
                                 rate=a.tax_rate,
                             )
                         else: