Not found: Op type not registered 'DecodeWav' in binary running on computer_name

[Avin-Techv]

(env) techv@techversant-pc:~/Desktop/django-deepspeech-server$ ./manage.py runserver
inside module
inside module
inside module
inside module
TensorFlow: v1.12.0-10-ge232881
DeepSpeech: v0.4.0-0-g48ad711
Warning: reading entire model file into memory. Transform model file into an mmapped graph to reduce heap usage.
2019-01-17 12:56:27.681381: I tensorflow/core/platform/cpu_feature_guard.cc:141] Your CPU supports instructions that this TensorFlow binary was not compiled to use: AVX2 FMA
Not found: Op type not registered 'DecodeWav' in binary running on techversant-pc. Make sure the Op and Kernel are registered in the binary running in this process. Note that if you are loading a saved graph which used ops from tf.contrib, accessing (e.g.) tf.contrib.resampler should be done before importing the graph, as contrib ops are lazily registered when the module is first accessed.
inside module
inside module
inside module
inside module
TensorFlow: v1.12.0-10-ge232881
DeepSpeech: v0.4.0-0-g48ad711
Warning: reading entire model file into memory. Transform model file into an mmapped graph to reduce heap usage.
2019-01-17 12:56:28.270557: I tensorflow/core/platform/cpu_feature_guard.cc:141] Your CPU supports instructions that this TensorFlow binary was not compiled to use: AVX2 FMA
Not found: Op type not registered 'DecodeWav' in binary running on techversant-pc. Make sure the Op and Kernel are registered in the binary running in this process. Note that if you are loading a saved graph which used ops from tf.contrib, accessing (e.g.) tf.contrib.resampler should be done before importing the graph, as contrib ops are lazily registered when the module is first accessed.
Unhandled exception in thread started by <function check_errors..wrapper at 0x7ff24eb70400>
Traceback (most recent call last):
File "/home/techv/Desktop/django-deepspeech-server/env/lib/python3.5/site-packages/django/utils/autoreload.py", line 225, in wrapper
fn(*args, **kwargs)
File "/home/techv/Desktop/django-deepspeech-server/env/lib/python3.5/site-packages/django/core/management/commands/runserver.py", line 109, in inner_run
autoreload.raise_last_exception()
File "/home/techv/Desktop/django-deepspeech-server/env/lib/python3.5/site-packages/django/utils/autoreload.py", line 248, in raise_last_exception
raise _exception[1]
File "/home/techv/Desktop/django-deepspeech-server/env/lib/python3.5/site-packages/django/core/management/init.py", line 337, in execute
autoreload.check_errors(django.setup)()
File "/home/techv/Desktop/django-deepspeech-server/env/lib/python3.5/site-packages/django/utils/autoreload.py", line 225, in wrapper
fn(*args, **kwargs)
File "/home/techv/Desktop/django-deepspeech-server/env/lib/python3.5/site-packages/django/init.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/techv/Desktop/django-deepspeech-server/env/lib/python3.5/site-packages/django/apps/registry.py", line 89, in populate
app_config = AppConfig.create(entry)
File "/home/techv/Desktop/django-deepspeech-server/env/lib/python3.5/site-packages/django/apps/config.py", line 90, in create
module = import_module(entry)
File "/home/techv/Desktop/django-deepspeech-server/env/lib/python3.5/importlib/init.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 986, in _gcd_import
File "", line 969, in _find_and_load
File "", line 944, in _find_and_load_unlocked
File "", line 222, in _call_with_frames_removed
File "", line 986, in _gcd_import
File "", line 969, in _find_and_load
File "", line 958, in _find_and_load_unlocked
File "", line 673, in _load_unlocked
File "", line 665, in exec_module
File "", line 222, in _call_with_frames_removed
File "/home/techv/Desktop/django-deepspeech-server/speech_server_main/apps.py", line 30, in
class SpeechServerMain(AppConfig):
File "/home/techv/Desktop/django-deepspeech-server/speech_server_main/apps.py", line 38, in SpeechServerMain
ds = Model(model, N_FEATURES, N_CONTEXT, alphabet, BEAM_WIDTH)
File "/home/techv/Desktop/django-deepspeech-server/env/lib/python3.5/site-packages/deepspeech/init.py", line 14, in init
raise RuntimeError("CreateModel failed with error code {}".format(status))
RuntimeError: CreateModel failed with error code 5
File "/home/techv/Desktop/django-deepspeech-server/env/lib/python3.5/site-packages/django/core/management/commands/runserver.py", line 109, in inner_run