[ndnSIM] problem running visualizer

[Swetha B]

Hi
I have problem running visualizer and getting following response
please suggest the necessary changes to be made

swetha at swetha-Ubuntu:~/Desktop/ndnSIM/ndnSIM-sample-topologies$ ./waf --run
ndn-simple --vis
Waf: Entering directory
`/home/swetha/Desktop/ndnSIM/ndnSIM-sample-topologies/build'
Waf: Leaving directory
`/home/swetha/Desktop/ndnSIM/ndnSIM-sample-topologies/build'
'build' finished successfully (0.013s)
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File
"/home/swetha/Desktop/ndnSIM/ns-3/src/visualizer/visualizer/__init__.py",
line 2, in <module>
    from .core import start, register_plugin, set_bounds,
add_initialization_hook
  File
"/home/swetha/Desktop/ndnSIM/ns-3/src/visualizer/visualizer/core.py", line
69, in <module>
    from .base import InformationWindow, PyVizObject, Link,
lookup_netdevice_traits, PIXELS_PER_METER
  File
"/home/swetha/Desktop/ndnSIM/ns-3/src/visualizer/visualizer/base.py", line
70, in <module>
    if ns_mesh_loaded:
NameError: name 'ns_mesh_loaded' is not defined


Regards
Swetha B,
Research scholar
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