AttributeError: 'NoneType' object has no attribute 'group'

[anipr2002]

$ ros2 run ros2_robotiqgripper server.py --ros-args -p IPAddress:="192.168.1.102"
IPAddress ROS2 Parameter received: 192.168.1.102
[ROS2 Robotiq Gripper]: ros2_RobotiqGripper_ServiceServer generated.
Traceback (most recent call last):
File "/home/anipr2002/CODE/ROS_WS/robotiq_ws/install/ros2_robotiqgripper/lib/ros2_robotiqgripper/server.py", line 165, in
main()
File "/home/anipr2002/CODE/ROS_WS/robotiq_ws/install/ros2_robotiqgripper/lib/ros2_robotiqgripper/server.py", line 159, in main
rclpy.spin(GripperNode)
File "/opt/ros/jazzy/lib/python3.12/site-packages/rclpy/init.py", line 244, in spin
executor.spin_once()
File "/opt/ros/jazzy/lib/python3.12/site-packages/rclpy/executors.py", line 827, in spin_once
self._spin_once_impl(timeout_sec)
File "/opt/ros/jazzy/lib/python3.12/site-packages/rclpy/executors.py", line 822, in _spin_once_impl
raise handler.exception()
File "/opt/ros/jazzy/lib/python3.12/site-packages/rclpy/task.py", line 239, in call
self._handler.send(None)
File "/opt/ros/jazzy/lib/python3.12/site-packages/rclpy/executors.py", line 508, in handler
await call_coroutine()
File "/opt/ros/jazzy/lib/python3.12/site-packages/rclpy/executors.py", line 447, in _execute
response = await await_or_execute(srv.callback, request, srv.srv_type.Response())
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/ros/jazzy/lib/python3.12/site-packages/rclpy/executors.py", line 111, in await_or_execute
return callback(*args)
^^^^^^^^^^^^^^^
File "/home/anipr2002/CODE/ROS_WS/robotiq_ws/install/ros2_robotiqgripper/lib/ros2_robotiqgripper/server.py", line 110, in ExecuteService
GripperPos_STR = int(re.search(r'\d+', str(data)).group())
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'group'
[ros2run]: Process exited with failure 1

ROS_DISTRO : Jazzy
Robotiq 2F-140.

I am getting this error when I run
$ ros2 service call /Robotiq_Gripper ros2_robotiqgripper/srv/RobotiqGripper "{action: 'CLOSE'}"