Failed to load nodelet [/camera/realsense2_camera] of type [realsense2_camera/RealSenseNodeFactory]

enter:

roslaunch realsense2_camera rs_rgbd.launch

Error:
Error reason:

是找不到realsense2_camera包，在安装D435的包时，以为bashrc文件里已存在要添加的路径故没有执行

Solution:

echo "source ~/catkin_ws/devel/setup.bash" >> ~/.bashrc
source ~/.bashrc

Reference link
https://blog.csdn.net/u012926144/article/details/80767540