[ndnSIM] problem with visualizer

[Abdelkader Herouala]

Dear ndnSIM researchers;

When i trying to install ndnSIM on ubuntu 18.4 when i retrived in the *
Dependencies for NS-3 Python bindings*
 the tow bib

sudo apt-get install python-pygoocanvas
sudo apt-get install python-rsvg ipython

the terminal show me
E: Unable to locate package python-pygoocanvas
E: Unable to locate package python-rsvg ipython

because UBUNTU 18 is no longer support this tow

and when i try to run simulation with --vis ti show me the msg below
assert failed. cond="uid != 0", msg="Assert in TypeId::LookupByName:
ns3::VisualSimulatorImpl not found",
file=../src/core/model/type-id.cc, line=828
terminate called without an active exception
Command ['/home/mohammed/Desktop/ndnSIM/ns-3/build/src/ndnSIM/examples/ns3-dev-ndn-simple-debug',
'--SimulatorImplementationType=ns3::VisualSimulatorImpl'] terminated
with signal SIGIOT. Run it under a debugger to get more information
(./waf --run <program> --command-template="gdb --args %s <args>").

tell me the solution please because i m begener in ndnSIM

Best regards;
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