From db02580f4dde9ff551ebaa928858464dc10939b0 Mon Sep 17 00:00:00 2001
From: hellysmile <hellysmile@gmail.com>
Date: Fri, 13 Oct 2017 17:01:58 +0300
Subject: [PATCH] Added more details to TypeError regarding access_log_class.

---
 aiohttp/web.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/aiohttp/web.py b/aiohttp/web.py
index 4a9d0276e74..4b5a1de2ff6 100644
--- a/aiohttp/web.py
+++ b/aiohttp/web.py
@@ -237,8 +237,10 @@ def make_handler(self, *,
                      **kwargs):
 
         if not issubclass(access_log_class, AbstractAccessLogger):
-            raise TypeError('access_log_class must be subclass of '
-                            'aiohttp.abc.AbstractAccessLogger')
+            raise TypeError(
+                'access_log_class must be subclass of '
+                'aiohttp.abc.AbstractAccessLogger, got {}'.format(
+                    access_log_class))
 
         self._set_loop(loop)
         self.freeze()