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main_node.cpp:(.text+0x34c): undefined reference to `ros::NodeHandle::~NodeHandle()'

It's getting the error, so it may be that the link settings are missing. Adding the following to CMakeLists.txt may solve the problem.

target_link_libraries(main_node ${catkin_LIBRARIES})

The part of main_node must be aligned with add_executable.

add_executable(main_node src/main_node.cpp)

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