Unity: Could not find metadata files

[ottog10]

I am trying to test the ros2-for-unity asset, I have complied everything following your instructions, upload the asset to Unity, create a block and add Component and Listener. when I do play I get the message Could not find metadata files. Tried to run python3 metadata_generator.py but give errors. Also, when I finish the build I get: cp: cannot stat '/home/otto/clearpath_ws/src/ros2-for-unity/src/Ros2ForUnity/metadata_ros2cs.xml': No such file or directory.
All videos uploaded to YouTube don't do any extra steps and cant find any info about this two files.. any ideas on how to fix the problem?

Using:
Ros2 humble
Unity 6

Problem in code:
ros2csMetadata.Load(GetPluginPath() + separator + "metadata_ros2cs.xml");
ros2ForUnityMetadata.Load(GetRos2ForUnityPath() + separator + "metadata_ros2_for_unity.xml");
Thanks!