AttributeError: 'PandaArm' object has no attribute '_joint_names'

[rylynnrex]

All package is the newest version.

When I run
r = PandaArm()
It shows this error.

RobotParam: get_robot_name cannot detect robot name under param /robot_config/arm_id
RobotParam: get_joint_names cannot detect joint_names for arm
RobotParam: get_joint_limits cannot detect robot joint velocity limits under param /robot_config/joint_config/joint_velocity_limit
RobotParam: get_joint_limits cannot detect robot joint position lower limits under param /robot_config/joint_config/joint_position_limit/lower
RobotParam: get_joint_limits cannot detect robot joint position upper limits under param /robot_config/joint_config/joint_position_limit/upper
RobotParam: get_joint_limits cannot detect robot joint torque limits under param /robot_config/joint_config/joint_effort_limit
RobotParam: get_joint_limits cannot detect robot joint acceleration limits under param /robot_config/joint_config/joint_acceleration_limit
PandaArm: Cannot detect joint names for arm on this robot. Exiting Arm.init().
Traceback (most recent call last):
File "", line 1, in
File "/home/rex/.local/lib/python3.8/site-packages/panda_robot/panda_robot.py", line 84, in init
for i in range(len(self.joint_names()))]
File "/home/rex/catkin_ws/src/franka_ros_interface/franka_interface/src/franka_interface/arm.py", line 274, in joint_names
return self._joint_names
AttributeError: 'PandaArm' object has no attribute '_joint_names'

[github-actions]

Hi @rylynnrex, thank you for using this repository. Unfortunately, I am unable to maintain this package any more, sorry!
If you are interested in contributing to this repository or are willing to maintain it, please contact me at mail@saifsidhik.page.
-- Saif