Getting error of core dump while continuing training from last official 0.4.1 checkpoint

@lissyx I am trying to train my own data on top of 0.4.1 pre-trained checkpoint while training I am getting an error.
my command is below:
python3 ./DeepSpeech.py --n_hidden 2048 --checkpoint_dir /home/sush/Desktop/deepspeech_0.4.1/DeepSpeech-0.4.1/fine_tuning_checkpoints --epoch -1 --train_files /home/sush/Desktop/speaker_recog/deepspeech/DeepSpeech/own_data/clips/train.csv --dev_files /home/sush/Desktop/speaker_recog/deepspeech/DeepSpeech/own_data/clips/dev.csv --test_files /home/sush/Desktop/speaker_recog/deepspeech/DeepSpeech/own_data/clips/test.csv --learning_rate 0.0001 --export_dir n_model
below is my error.

Preprocessing ['/home/sush/Desktop/speaker_recog/deepspeech/DeepSpeech/own_data/clips/train.csv']
Preprocessing done
Preprocessing ['/home/sush/Desktop/speaker_recog/deepspeech/DeepSpeech/own_data/clips/dev.csv']
Preprocessing done
W Parameter --validation_step needs to be >0 for early stopping to work
I STARTING Optimization
I Training epoch 15027...
I Training of Epoch 15027 - loss: 3.521812                                     
I FINISHED Optimization - training time: 0:07:16
100% (15 of 15) |########################| Elapsed Time: 0:06:49 Time:  0:06:49
Preprocessing ['/home/sush/Desktop/speaker_recog/deepspeech/DeepSpeech/own_data/clips/test.csv']
Preprocessing done
Loading the LM will be faster if you build a binary file.
Reading data/lm/lm.binary
----5---10---15---20---25---30---35---40---45---50---55---60---65---70---75---80---85---90---95--100
terminate called after throwing an instance of 'lm::FormatLoadException'
  what():  ../kenlm/lm/read_arpa.cc:65 in void lm::ReadARPACounts(util::FilePiece&, std::vector<long unsigned int>&) threw FormatLoadException.
first non-empty line was "version https://git-lfs.github.com/spec/v1" not \data\. Byte: 43
Aborted (core dumped)

We have quite a few threads that mention this problem: https://discourse.mozilla.org/search?q=lm%3A%3AFormatLoadException

@reuben I saw these post but cannot able to figure out the problem here. if you could just nudge me to my actual problem it would be great.

i think I am getting this error because git lfs. I have dowloaded 0.4.1 git reposiratory by downloading zip on github. and did not cloned it with git lfs. is this something I have to do. if yes how should I do it. I never used gil lfs before

Unfortunately GitHub zip downloads don’t work with LFS, you’ll have to install LFS and clone with git.

I am not able to figure out how to clone with LFS I have installed lfs but which command is used to clone the repo. please help

It’s all documented in the README: https://github.com/mozilla/DeepSpeech/#getting-the-code

thank for the help i have able to train this model. using git lfs clone --branch v0.4.1 https://github.com/mozilla/DeepSpeech