From cd88af32f2f1c79ae4974d8647556d055a7a0d3a Mon Sep 17 00:00:00 2001
From: ouzklcn <oguz.kilcan@gmail.com>
Date: Wed, 21 Sep 2016 11:27:37 +0300
Subject: [PATCH] add fix for janeczku/calibre-web#64 kindlegen conversation
 error

---
 cps/helper.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/cps/helper.py b/cps/helper.py
index 907cd136..3cbc4534 100755
--- a/cps/helper.py
+++ b/cps/helper.py
@@ -103,6 +103,8 @@ def send_mail(book_id, kindle_mail):
         filepath = make_mobi(book.id)
         if filepath is not None:
             msg.attach(get_attachment(filepath))
+        elif filepath is None:
+            return "Could not convert epub to mobi"
         elif 'pdf' in formats:
             msg.attach(get_attachment(formats['pdf']))
     elif 'pdf' in formats: