Node failing to launch

[kartheekmedathati]

Hi! I am trying this out on ros2 humble, even though the ffplay aptly captures the video from the device at /dev/video0 running this node is throwing an exception:

ros2 launch camera_node camera_node_demo.py camera_path:=/dev/video0
[INFO] [launch]: All log files can be found below /root/.ros/log/2024-06-21-22-10-24-976690-hms-6758
[INFO] [launch]: Default logging verbosity is set to INFO
[INFO] [component_container-1]: process started with pid [6772]
[INFO] [component_container-2]: process started with pid [6774]
[component_container-1] [INFO] [1719007825.268665127] [camera_node.camera_node_container]: Load Library: /Work/SLAM_Experiments/ros2-camera-node/install/camera_node/lib/libcamera_node_component.so
[component_container-2] [INFO] [1719007825.269494465] [camera_node.frame_fetcher_container]: Load Library: /Work/SLAM_Experiments/ros2-camera-node/install/camera_node/lib/libframe_fetcher_node.so
[component_container-1] [INFO] [1719007825.319949224] [camera_node.camera_node_container]: Found class: rclcpp_components::NodeFactoryTemplate<camera_node::CameraNode>
[component_container-1] [INFO] [1719007825.319968550] [camera_node.camera_node_container]: Instantiate class: rclcpp_components::NodeFactoryTemplate<camera_node::CameraNode>
[component_container-2] [INFO] [1719007825.330884894] [camera_node.frame_fetcher_container]: Found class: rclcpp_components::NodeFactoryTemplate<camera_node::FrameFetcherNode>
[component_container-2] [INFO] [1719007825.330900843] [camera_node.frame_fetcher_container]: Instantiate class: rclcpp_components::NodeFactoryTemplate<camera_node::FrameFetcherNode>
[INFO] [launch_ros.actions.load_composable_nodes]: Loaded node '/frame_fetcher_node' in container '/camera_node/frame_fetcher_container'
[component_container-1] [ERROR] [1719007825.450991846] [camera_node.camera_node_container]: Component constructor threw an exception:
[ERROR] [launch_ros.actions.load_composable_nodes]: Failed to load node 'camera_node' of type 'camera_node::CameraNode' in container '/camera_node/camera_node_container': Component constructor threw an exception:
Unknown error