cv_bridge err cvtColorForDisplay

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Hi! when i used 'git glone https:/~~ ' to get vision_opencv and i put this vision_opencv to my workspace/src (cf my_ws) and i did compile using catkin_make

and i also had a Opencv2.4.9

so, i tried catkin_make to make a use my_subscriber_uvc node ( it came from my_subscriber_uvc.cpp) but err exist : cvtColorForDisplay is not a member of cv_bridge..

how to fix this error? please help me! Thank you!!