ERROR: cannot launch node of type [name of node]

edit

I wrote a node that keeps the trajectory markers (to form a path) and join them into LINE_STRIPS. The problem I have is that as soon as I launch the node via

roslaunch lidar_boat_detection trajectory_preprocessor.launch

I get the following error and I am not sure why:

PARAMETERS  * /rosdistro: melodic  * /rosversion: 1.14.3  * /trajectory_preprocessor/trajectory_preprocessor_data: True  * /use_sim_time: True
NODES   /
    trajectory_preprocessor (lidarboatsproject/trajectory_preprocessor_node)
ROS_MASTER_URI=http://localhost:11311
ERROR: cannot launch node of type [lidarboatsproject/trajectory_preprocessor_node]:  lidarboatsproject 
ROS path [0]=/opt/ros/melodic/share/ros 
ROS  path [1]=/home/emanuele/catkin_docking_ws/src
ROS path  [2]=/home/emanuele/catkin_ws/src 
ROS  path [3]=/opt/ros/melodic/share 
No processes to monitor shutting down
 processing monitor... 
... shutting down processing monitor complete

Below the launch file:

<?xml version="1.0"?>
<launch>
<param name="use_sim_time" value="true" />
 <node pkg="lidarboatsproject" type="trajectory_preprocessor_node"
       name="trajectory_preprocessor" clear_params="false">
      <param name="trajectory_preprocessor_data" value="true"/>
 </node>
</launch>

Thank you very much for pointing to the right direction for solving the problem.