Are all paremeters required?

[Timple]

I receive a fatal ROS error if I do not set the lock parameters

[FATAL]: Error parsing params: could not load parameter 'locks'. (namespace: /robot/twist_mux)

Is it really a fatal error? Since the node seems to work fine without it.

Or would it be better just to disable the use of lock topics if the parameter is not present?

[DLu]

FWIW, I also got this error when using the binary, but compiling from source did not give me the problem.