From 9265a03416a536acb37ca6073292a0c88b23ab47 Mon Sep 17 00:00:00 2001
From: Giovanni Barillari <g@baro.dev>
Date: Wed, 18 Jan 2023 14:27:30 +0100
Subject: [PATCH] Fix WSGI environ optional items (#42)

---
 granian/wsgi.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/granian/wsgi.py b/granian/wsgi.py
index 3af5cab4..a92fcf4e 100644
--- a/granian/wsgi.py
+++ b/granian/wsgi.py
@@ -1,4 +1,5 @@
 import os
+import sys
 
 from functools import wraps
 from typing import Any, List, Tuple
@@ -21,8 +22,7 @@ def _callback_wrapper(callback):
         'SCRIPT_NAME': '',
         'SERVER_PROTOCOL': 'HTTP/1.1',
         'SERVER_SOFTWARE': 'Granian',
-        'wsgi.errors': None,
-        'wsgi.file_wrapper': None,
+        'wsgi.errors': sys.stderr,
         'wsgi.input_terminated': True,
         'wsgi.input': None,
         'wsgi.multiprocess': False,