moveit error group is not a chain

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Hello,

I’m trying to send trajectory generated by moveit to gazebo for panda arm. Everything on gazebo side is fine.

When i launch planning_execution.launch file moveit shows me below error:

Group panda_arm is not a chain. Kinematics solver of type 'kdl_kinematics_plugin/KDLKinematicsPlugin' could not be initialized for group 'panda_arm'

I also found out here that adding kinemtics chain instead of joints group will solve the problem.

After implementing the above change i get error related to ''robot model is not loaded''.

can anyone help me out in this??