[ndnSIM] how to get data from ndns-scenario

[Seshariana Rahma Melati]

hello,
I have tried ndns-scenario from
https://github.com/spirosmastorakis/ndns-scenario.git and I managed to run
the program with its visualization as well, but when I want to check
cs-tracer I haven't managed to get the data
whether to see the data from the scenario is not the cs-tracer data
and i have a problem that is:

terminate called after throwing an instance of 'ndn :: ndns ::
ManagementTool :: Error'
what (): Zone with Name = / is already presented in the local NDNS database

thank you,
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