From 6643b63cdda37c688ea572850ff86f81d0ddb7aa Mon Sep 17 00:00:00 2001
From: Chris Marchbanks <csmarchbanks@gmail.com>
Date: Fri, 29 Oct 2021 10:52:17 -0600
Subject: [PATCH] Fix AssertionError: Status must be a string

Signed-off-by: Chris Marchbanks <csmarchbanks@gmail.com>
---
 prometheus_client/exposition.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/prometheus_client/exposition.py b/prometheus_client/exposition.py
index 8bccc609..e3741448 100644
--- a/prometheus_client/exposition.py
+++ b/prometheus_client/exposition.py
@@ -114,8 +114,8 @@ def prometheus_app(environ, start_response):
         params = parse_qs(environ.get('QUERY_STRING', ''))
         if environ['PATH_INFO'] == '/favicon.ico':
             # Serve empty response for browsers
-            status = '200 OK'
-            header = ('', '')
+            status = str('200 OK')
+            header = (str(''), str(''))
             output = b''
         else:
             # Bake output