Update wechat_qr/demo.py

wechat_qr/demo.py

@@ -22,7 +22,7 @@ def detect_qr(detect_model: str, sr_model: str,
     print(f"Image size: {img.shape[1]}×{img.shape[0]}")
 
     try:
-        detector = cv.wechat_qrcode_WeChatQRCode(detect_model, sr_model)
+        detector = cv.wechat_qrcode_WeChatQRCode("",detect_model, "",sr_model)
     except AttributeError:
         raise RuntimeError(
             "cv2.wechat_qrcode_WeChatQRCode not found.\n"