Problem Listener with [closed]

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Good morning people

I did a listener for the camera/image_raw node republish (camera/image_test, but the following error appears: Client [/ QR_Listener_5598_1492006578702] wants topic /camera/image_test to have datatype/md5sum [std_msgs /String/992ce8a1687cec8c8bd883ec73ca41d1], but our version has [sensor_msgs/Image/060021388200f6f0f447d0fcd9c64743]. Dropping connection.

Follow the listener code:

#!/usr/bin/env python

import rospy
import cv2
import zbar

from std_msgs.msg import String
from PIL import Image

def callback(data):
    scanner = zbar.ImageScanner()
    scanner.parse_config('enable')

    while not rospy.is_shutdown():
        ret, output = data.read()

        if not ret:
            continue

        gray = cv2.cvtColor(output, cv2.COLOR_BGR2GRAY, dstCn=0)
        pil = Image.fromarray(gray)
        width, height = pil.size
        raw = pil.tobytes()
        image = zbar.Image(width, height, 'Y800', raw)
        scanner.scan(image)

        qrc = None

        for symbol in image:
            print '"%s"' % symbol.data
            qrc = symbol.data

        qrc

        cv2.imshow("#Qr Code", output)

        if qrc != None:
            rospy.loginfo(rospy.get_caller_id() + "Qr Code %s:", data.data)


def listener():
    rospy.init_node('QR_Listener', anonymous=True)

    rospy.Subscriber("/camera/image_test", String, callback)

    rospy.spin()


if __name__ == '__main__':
    try:
        listener()

    except rospy.ROSInterruptException:
        pass