Exercise_32 ERROR: cannot launch node of type [services_32/execute_trajectory]: can't locate node [execute_trajectory] in package [services_32]

I have this error while running exercise 3.2.
ERROR: cannot launch node of type [services_32/execute_trajectory]: can’t locate node [execute_trajectory] in package [services_32]

I did the following but still encountered the same.

run from catkin_ws directory

rm -rf build/ devel/
cakin_make
source devel/setup.bash

In addition, I added the following at the end of cmakelist file and roslib under find_package

image

Hi @okkewei,

I’m sorry that you are having this issue. The straightforward answer is that your C++ node has not been built.

Please check the following post for some hints on how to solve this: