Publisher seems to be workable but when I do a rosrun on receiver script the error exists. as very new on this field I have no idea how to fix. thank you in advance.

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1. Error Details

Traceback (most recent call last):
File "/home/------/proto_one/src/sensors_unit/scripts/first_sensor.py", line 28, in <module>
first_sensor()
File "/home/------/proto_one/src/sensors_unit/scripts/first_sensor.py", line 23, in first_sensor
pub.publish(testnum)
File "/opt/ros/noetic/lib/python3/dist-packages/rospy/topics.py", line 886, in publish
  raise ROSSerializationException(str(e))
rospy.exceptions.ROSSerializationException: field data must be an integer type

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2. Receiver code(Subscriber)

 #!/usr/bin/env python3
import rospy as R
from std_msgs.msg import Int16
import random

def callback(data):
    R.loginfo(data.data)
def reciever():
    R.init_node("reciever", anonymous=True)
    R.Subscriber("commuline1", Int16, callback)
    R.spin()

if __name__ =="__main__":
    reciever()

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3. Sender code (Publisher)

#!/usr/bin/env python3

import rospy as R
from std_msgs.msg import Int16
import random
global x
x = 0

def first_sensor():
    x=0
    pub = R.Publisher("commuline1", Int16, queue_size=10)
    R.init_node("first_sensor", anonymous=True)
    rate =R.Rate(10)

    while not R.is_shutdown() and x <1000000 :
        x += 1
        t = x
        testnum = "helloooo %s" %R.get_time()
        ##testnum2 = print(testnum)
        ##print(testnum2)
        ##pub.publish(testnum2)
        print(t)
        pub.publish(testnum)
        rate = R.Rate(10)

if __name__ == "__main__":
    try:
        first_sensor()
    except R.ROSInterruptException:
        pass