From 14cb2bba8362184a50c8e7feeed96216d5f5fe62 Mon Sep 17 00:00:00 2001
From: Stratos Gerakakis <stratosgear@gmail.com>
Date: Mon, 1 Apr 2019 00:21:59 +0200
Subject: [PATCH] Prevent a TypeError Exception

Under my Python 3.6.6 env I get a:

```
TypeError: must be str, not bytes
```
without this fix.
---
 sphinxcontrib/plantuml.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sphinxcontrib/plantuml.py b/sphinxcontrib/plantuml.py
index 1a818e3..dd020e9 100644
--- a/sphinxcontrib/plantuml.py
+++ b/sphinxcontrib/plantuml.py
@@ -376,7 +376,8 @@ def _convert_eps_to_pdf(self, refname, fname):
     try:
         try:
             p = subprocess.Popen(args, stdout=subprocess.PIPE,
-                                 stderr=subprocess.PIPE)
+                                 stderr=subprocess.PIPE,
+                                 encoding='utf-8')
         except OSError as err:
             # workaround for missing shebang of epstopdf script
             if err.errno != getattr(errno, 'ENOEXEC', 0):