Graph compilation - Error missing file

Hi, I have downloaded the model compile file from link [https://alphacephei.com/vosk/models/vosk-model-en-us-0.22-compile.zip](url) and while running the `compile-graph.sh` to compile graph in kaldi, I got a following error like below

```
root@MAK:~/kaldi/tools/model/vosk-model-en-us-0.22-compile# compile-graph.sh
+ rm -rf 'data/*.lm.gz' data/lang_local data/dict data/lang data/lang_test data/lang_test_rescore
+ rm -rf exp/lgraph
+ rm -rf exp/graph
+ mkdir -p data/dict
+ cp db/phone/extra_questions.txt db/phone/extra_questions.txt:Zone.Identifier db/phone/nonsilence_phones.txt db/phone/nonsilence_phones.txt:Zone.Identifier db/phone/optional_silence.txt db/phone/optional_silence.txt:Zone.Identifier db/phone/silence_phones.txt db/phone/silence_phones.txt:Zone.Identifier data/dict
+ python3 ./dict.py
+ ngram-count -wbdiscount -order 4 -text db/extra.txt -lm data/extra.lm.gz
/root/kaldi/tools/model/vosk-model-en-us-0.22-compile/compile-graph.sh: line 15: ngram-count: command not found
+ ngram -order 4 -lm db/en-230k-0.5.lm.gz -mix-lm data/extra.lm.gz -lambda 0.95 -write-lm data/en-mix.lm.gz
/root/kaldi/tools/model/vosk-model-en-us-0.22-compile/compile-graph.sh: line 16: ngram: command not found
+ ngram -order 4 -lm data/en-mix.lm.gz -prune 3e-8 -write-lm data/en-mixp.lm.gz
/root/kaldi/tools/model/vosk-model-en-us-0.22-compile/compile-graph.sh: line 17: ngram: command not found
+ ngram -lm data/en-mixp.lm.gz -write-lm data/en-mix-small.lm.gz
/root/kaldi/tools/model/vosk-model-en-us-0.22-compile/compile-graph.sh: line 18: ngram: command not found
+ utils/prepare_lang.sh data/dict '[unk]' data/lang_local data/lang
utils/prepare_lang.sh data/dict [unk] data/lang_local data/lang
Checking data/dict/silence_phones.txt ...
--> reading data/dict/silence_phones.txt
--> text seems to be UTF-8 or ASCII, checking whitespaces
--> text contains only allowed whitespaces
--> data/dict/silence_phones.txt is OK

Checking data/dict/optional_silence.txt ...
--> reading data/dict/optional_silence.txt
--> text seems to be UTF-8 or ASCII, checking whitespaces
--> text contains only allowed whitespaces
--> data/dict/optional_silence.txt is OK

Checking data/dict/nonsilence_phones.txt ...
--> reading data/dict/nonsilence_phones.txt
--> text seems to be UTF-8 or ASCII, checking whitespaces
--> text contains only allowed whitespaces
--> data/dict/nonsilence_phones.txt is OK

Checking disjoint: silence_phones.txt, nonsilence_phones.txt
--> disjoint property is OK.

Checking data/dict/lexicon.txt
--> reading data/dict/lexicon.txt
--> text seems to be UTF-8 or ASCII, checking whitespaces
--> text contains only allowed whitespaces
--> data/dict/lexicon.txt is OK

Checking data/dict/extra_questions.txt ...
--> reading data/dict/extra_questions.txt
--> text seems to be UTF-8 or ASCII, checking whitespaces
--> text contains only allowed whitespaces
--> data/dict/extra_questions.txt is OK
--> SUCCESS [validating dictionary directory data/dict]

**Creating data/dict/lexiconp.txt from data/dict/lexicon.txt
utils/prepare_lang.sh: line 547: fstaddselfloops: command not found
ERROR: FstHeader::Read: Bad FST header: standard input
+ utils/format_lm.sh data/lang data/en-mix-small.lm.gz data/dict/lexicon.txt data/lang_test
Converting 'data/en-mix-small.lm.gz' to FST
gzip: data/en-mix-small.lm.gz: No such file or directory
utils/format_lm.sh: line 55: arpa2fst: command not found
+ utils/mkgraph.sh --self-loop-scale 1.0 data/lang_test exp/chain/tdnn exp/chain/tdnn/graph
mkgraph.sh: expected data/lang_test/G.fst to exist
+ utils/build_const_arpa_lm.sh data/en-mix.lm.gz data/lang_test data/lang_test_rescore
utils/build_const_arpa_lm.sh: line 45: arpa-to-const-arpa: command not found
+ rnnlm/change_vocab.sh data/lang/words.txt exp/rnnlm exp/rnnlm_out
rnnlm/change_vocab.sh: Copying config directory.
rnnlm/change_vocab.sh: Re-generating words.txt, unigram_probs.txt, word_feats.txt and word_embedding.final.mat.
rnnlm/get_word_features.py: made features for 312336 words.
rnnlm/change_vocab.sh: line 75: rnnlm-get-word-embedding: command not found
+ utils/mkgraph_lookahead.sh --self-loop-scale 1.0 data/lang exp/chain/tdnn data/en-mix-small.lm.gz exp/chain/tdnn/lgraph
utils/mkgraph_lookahead.sh : compiling grammar data/en-mix-small.lm.gz
utils/mkgraph_lookahead.sh : expected data/en-mix-small.lm.gz to exist
```
kindly suggest where to find `en-mix-small.lm.gz` file.