Error while running gui_demo.py with our chain dnn model

[anchalrani]

I have added
self.asr.set_property("frame-subsampling-factor", 3)
self.asr.set_property("acoustic-scale", 1)
self.asr.set_property("nnet-mode", 3)
to gui_demo.py by visiting the issues on git, but the problem is not getting solved.
I am getting the following error:

_**gui-demo.py:14: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
from gi.repository import GObject, Gst, Gtk, Gdk
ERROR ([5.5.268~1-f9828]:ExpectToken():io-funcs.cc:209) Expected token "Nnet", got instead "Nnet3".

[ Stack-Trace: ]
kaldi::MessageLogger::LogMessage() const
kaldi::MessageLogger::LogAndThrow::operator=(kaldi::MessageLogger const&)
kaldi::ExpectToken(std::istream&, bool, char const*)
kaldi::nnet2::Nnet::Read(std::istream&, bool)
kaldi::nnet2::AmNnet::Read(std::istream&, bool)

g_object_setv
g_object_set_property

.
.
.

PyEval_EvalFrameEx
PyEval_EvalCodeEx
PyEval_EvalCode

PyRun_FileExFlags
PyRun_SimpleFileExFlags
Py_Main
__libc_start_main
_start

LOG ([5.5.2681-f9828]:ComputeDerivedVars():ivector-extractor.cc:183) Computing derived variables for iVector extractor
LOG ([5.5.2681-f9828]:ComputeDerivedVars():ivector-extractor.cc:204) Done.
Segmentation fault (core dumped)**_

EARLIER I WAS GETTING FOLLOWING ERROR :
_python2.7 gui-demo.py
gui-demo.py:14: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
from gi.repository import GObject, Gst, Gtk, Gdk
ERROR ([5.5.268~1-f9828]:ExpectToken():io-funcs.cc:209) Expected token "Nnet", got instead "Nnet3".

[ Stack-Trace: ]
kaldi::MessageLogger::LogMessage() const
kaldi::MessageLogger::LogAndThrow::operator=(kaldi::MessageLogger const&)
kaldi::ExpectToken(std::istream&, bool, char const*)
kaldi::nnet2::Nnet::Read(std::istream&, bool)
kaldi::nnet2::AmNnet::Read(std::istream&, bool)

g_object_setv
g_object_set_property

.
.
.

PyEval_EvalFrameEx
PyEval_EvalCodeEx
PyEval_EvalCode

PyRun_FileExFlags
PyRun_SimpleFileExFlags
Py_Main
__libc_start_main
_start

LOG ([5.5.2681-f9828]:ComputeDerivedVars():ivector-extractor.cc:183) Computing derived variables for iVector extractor
LOG ([5.5.2681-f9828]:ComputeDerivedVars():ivector-extractor.cc:204) Done.
ASSERTION_FAILED ([5.5.268~1-f9828]:LeftContext():nnet-nnet.cc:43) Assertion failed: (!components_.empty())

[ Stack-Trace: ]
kaldi::MessageLogger::LogMessage() const
kaldi::KaldiAssertFailure_(char const*, char const*, int, char const*)
kaldi::nnet2::Nnet::LeftContext() const
kaldi::nnet2::DecodableNnet2Online::DecodableNnet2Online(kaldi::nnet2::AmNnet const&, kaldi::TransitionModel const&, kaldi::nnet2::DecodableNnet2OnlineOptions const&, kaldi::OnlineFeatureInterface*)
kaldi::SingleUtteranceNnet2Decoder::SingleUtteranceNnet2Decoder(kaldi::OnlineNnet2DecodingConfig const&, kaldi::TransitionModel const&, kaldi::nnet2::AmNnet const&, fst::Fst<fst::ArcTpl<fst::TropicalWeightTpl > > const&, kaldi::OnlineFeatureInterface*)

clone

Aborted (core dumped)_