AMUST-NDNSIM : manifest not received

[amnafekih]

Hi,
I have this problem when i execute this example ndn-file-simple-example2-tracers provided in your tutorial.
root@client:/home/**********/VS-NS/ns-3# ./waf --run ndn-file-simple-example2-tracers
Waf: Entering directory /home/*************/VS-NS/ns-3/build' Waf: Leaving directory /home//VS-NS/ns-3/build'
Build commands will be stored in build/compile_commands.json
'build' finished successfully (3.742s)
Trace: File started downloading: 0 /myprefix/file1.img
root@client:/home/******/VS-NS/ns-3#
I can't understand why?
THANKS for your help.