From 02e8a2b4eb298109a40ed98e9a50dbfde600c89e Mon Sep 17 00:00:00 2001
From: yumoqing <yumoqing@gmail.com>
Date: Wed, 30 Sep 2020 11:30:42 +0800
Subject: [PATCH] bugfix

---
 kivyblocks/kivycamera.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kivyblocks/kivycamera.py b/kivyblocks/kivycamera.py
index 00af435..5d879c8 100644
--- a/kivyblocks/kivycamera.py
+++ b/kivyblocks/kivycamera.py
@@ -21,8 +21,10 @@ class KivyCamera(Image):
 		self.camera_id = camera_id
 		self.faceCascade = None
 		if face_detect:
-			# self.faceCascade = cv2.CascadeClassifier("Resources/haarcascades/haarcascade_frontalface_default.xml")  # added
 			self.faceCascade = cv2.CascadeClassifier('data/haarcascade/haarcascade_frontalface_default.xml')
+			if not self.faceCascade:
+				print('self.faceCascade is None')
+
 		self.update_task = Clock.schedule_interval(self.update, 1.0 / fps)
 
 	def on_size(self,o,size):