How can I show the exception which happens in ros2 param list?
I am calling ros2 param list
and get back: Exception while calling service of node '/node_name': None for all 3 nodes I have.
How can I show these exceptions?
While not an answer to my problem I found out that the different middlewares are incompatible. So setting
export RMW_IMPLEMENTATION=rmw_fastrtps_cpp
before using ros2 param list fixed my problem and I got the list of params.