Camera calibration using easy_handeye

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Hello, I am new to ROS. I am doing camera on base calibration on my xArm 6 DoF robot using the easy_handeye package. I am getting the following warning:

[ WARN] [1664462278.946062833]: Unable to transform object from frame 'camera_depth_frame' to planning frame 'world' (Could not find a connection between 'world' and 'camera_depth_frame' because they are not part of the same tree.Tf has two or more unconnected trees.)            [ WARN] [1664462278.946136600]: Unable to transform object from frame 'camera_link' to planning frame 'world' (Could not find a connection between 'world' and 'camera_link' because they are not part of the same tree.Tf has two or more unconnected trees.)                                                       [ WARN] [1664462278.946156523]: Unable to transform object from frame 'camera_depth_optical_frame' to planning frame 'world' (Could not find a connection between 'world' and 'camera_depth_optical_frame' because they are not part of the same tree.Tf has two or more unconnected trees.)                                                                                        [ WARN] [1664462278.946171884]: Unable to transform object from frame 'camera_color_frame' to planning frame 'world' (Could not find a connection between 'world' and 'camera_color_frame' because they are not part of the same tree.Tf has two or more unconnected trees.)

Launch file:

<?xml version="1.0" ?>
<launch>
    <!-- Setting calibration namespace -->
    <arg name="eye_on_hand" doc="if true, eye-on-hand instead of eye-on-base" />
    <arg name="namespace_prefix" default="easy_handeye" doc="the prefix of the namespace the node will run in, and of the folder in which the result will be saved" />
    <arg if="$(arg eye_on_hand)" name="namespace" value="$(arg namespace_prefix)_eye_on_hand" doc="the namespace the node will run in, and the folder in which the result will be saved" />
    <arg unless="$(arg eye_on_hand)" name="namespace" value="$(arg namespace_prefix)_eye_on_base" doc="the namespace the node will run in, and the folder in which the result will be saved" />
    <!-- Automatic robot movements -->
    <arg name="freehand_robot_movement" default="false" doc="if false, the rqt plugin for the automatic robot motion with MoveIt! will be started" />
    <arg name="move_group_namespace" default="/"  doc="the namespace of move_group for the automatic robot motion with MoveIt!" />
    <arg name="move_group" default="manipulator"  doc="the name of move_group for the automatic robot motion with MoveIt!" />
    <arg name="translation_delta_meters" default="0.1" doc="the maximum movement that the robot should perform in the translation phase" />
    <arg name="rotation_delta_degrees" default="25" doc="the maximum rotation that the robot should perform" />
    <arg name="robot_velocity_scaling" default="0.3" doc="the maximum speed the robot should reach, as a factor of the speed declared in the joint_limits.yaml" />
    <arg name="robot_acceleration_scaling" default="0.2" doc="the maximum acceleration the robot should reach, as a factor of the acceleration declared in the joint_limits.yaml" />
    <!-- The input reference frames -->
    <arg name="robot_base_frame" default="base_link" />
    <arg name="robot_effector_frame" default="tool0" />
    <arg name="tracking_base_frame" default="tracking_origin" />
    <arg name="tracking_marker_frame" default="tracking_target" />
    <!-- Publish dummy frames while calibrating -->
    <arg name="publish_dummy" default="true" doc="if true, a dummy calibration will be published to keep all frames ...