Fix error log (#2349)

homeassistant/components/http.py

@@ -437,7 +437,7 @@ class HomeAssistantView(object):
                 mimetype = mimetypes.guess_type(fil)[0]
 
             try:
-                fil = open(fil)
+                fil = open(fil, mode='br')
             except IOError:
                 raise NotFound()
 

tests/components/test_api.py

@@ -225,7 +225,7 @@ class TestAPI(unittest.TestCase):
 
     def test_api_get_error_log(self):
         """Test the return of the error log."""
-        test_content = 'Test String'
+        test_content = 'Test String°'
         with tempfile.NamedTemporaryFile() as log:
             log.write(test_content.encode('utf-8'))
             log.flush()