[ROS] Issues: rtabmap_ros "process has died" Error

Environment: ROS Noetic

Problem

• The apt package of rtabmap_ros was removed before building it from the source.
• RTAB-Map stand alone was installed from source. NO errors.
• rtabmap_ros was installed from source. No errors.
• When the rtabmap_ros was launched, the error of "process has died" was occuerd.

Solution

Delete the build and devel folders in the catkin_ws and run catkin_make.