MeloTTS - Korean language set up issues with MeCab

Author: robbyahnCreated Sep 26, 2025Updated Mar 25, 2026

I am running in Mac OS M2 Chip in conda env

I have tried to build new case sensitive volumen called 'Playpen'.

ModuleNotFoundError: No module named 'mecab' ImportError: Japanese requires mecab-python3 and unidic-lite (conflict with python-mecab-ko / MeCab package)

I am trying to run the following command. $ melo “안녕” output.wav --language KR

After following this instruction

git clone https://github.com/myshell-ai/MeloTTS.git cd MeloTTS pip install -e . python -m unidic download

Text split to sentences. “안녕”

=========================== 0%| | 0/1 [00:00<?, ?it/s]you have to install python-mecab-ko. install it... huggingface/tokenizers: The current process just got forked, after parallelism has already been used. Disabling parallelism to avoid deadlocks... To disable this warning, you can either: - Avoid using tokenizers before the fork if possible - Explicitly set the environment variable TOKENIZERS_PARALLELISM=(true | false)

so when I run first time. python-mecab-ko is forced to install

After this second run $ melo “안녕” output.wav --language KR

/Volumes/Playpen/MeloTTS/melo/main.py:27: UserWarning: You specified a speaker but the language is English. warnings.warn('You specified a speaker but the language is English.') /Users/robbyahn/miniconda3/envs/openvoice/lib/python3.9/site-packages/librosa/util/files.py:10: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81. from pkg_resources import resource_filename Traceback (most recent call last): File "/Volumes/Playpen/MeloTTS/melo/text/japanese.py", line 12, in import MeCab File "/Users/robbyahn/miniconda3/envs/openvoice/lib/python3.9/site-packages/MeCab/init.py", line 1, in from .mecab import MeCab, MeCabError, mecabrc_path File "/Users/robbyahn/miniconda3/envs/openvoice/lib/python3.9/site-packages/MeCab/mecab.py", line 9, in from mecab.types import Dictionary, Morpheme ModuleNotFoundError: No module named 'mecab'

The above exception was the direct cause of the following exception:

Traceback (most recent call last): File "/Users/robbyahn/miniconda3/envs/openvoice/bin/melo", line 7, in sys.exit(main()) File "/Users/robbyahn/miniconda3/envs/openvoice/lib/python3.9/site-packages/click/core.py", line 1161, in call return self.main(*args, **kwargs) File "/Users/robbyahn/miniconda3/envs/openvoice/lib/python3.9/site-packages/click/core.py", line 1082, in main rv = self.invoke(ctx) File "/Users/robbyahn/miniconda3/envs/openvoice/lib/python3.9/site-packages/click/core.py", line 1443, in invoke return ctx.invoke(self.callback, **ctx.params) File "/Users/robbyahn/miniconda3/envs/openvoice/lib/python3.9/site-packages/click/core.py", line 788, in invoke return __callback(*args, **kwargs) File "/Volumes/Playpen/MeloTTS/melo/main.py", line 28, in main from melo.api import TTS File "/Volumes/Playpen/MeloTTS/melo/api.py", line 13, in from . import utils File "/Volumes/Playpen/MeloTTS/melo/utils.py", line 13, in from melo.text.cleaner import clean_text File "/Volumes/Playpen/MeloTTS/melo/text/cleaner.py", line 1, in from . import chinese, japanese, english, chinese_mix, korean, french, spanish File "/Volumes/Playpen/MeloTTS/melo/text/japanese.py", line 14, in raise ImportError("Japanese requires mecab-python3 and unidic-lite.") from e ImportError: Japanese requires mecab-python3 and unidic-lite.

After this, if I tried to run english version

% melo "Text to read" output.wav

/Users/robbyahn/miniconda3/envs/openvoice/lib/python3.9/site-packages/librosa/util/files.py:10: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81. from pkg_resources import resource_filename Traceback (most recent call last): File "/Volumes/Playpen/MeloTTS/melo/text/japanese.py", line 12, in import MeCab File "/Users/robbyahn/miniconda3/envs/openvoice/lib/python3.9/site-packages/MeCab/init.py", line 1, in from .mecab import MeCab, MeCabError, mecabrc_path File "/Users/robbyahn/miniconda3/envs/openvoice/lib/python3.9/site-packages/MeCab/mecab.py", line 9, in from mecab.types import Dictionary, Morpheme ModuleNotFoundError: No module named 'mecab'

The above exception was the direct cause of the following exception:

Then I should reset mecab to let english version working.

Remove the wrong packages:

pip uninstall -y mecab mecab-python3 python-mecab-ko python-mecab-ko-dic Make sure the native MeCab is installed on macOS: brew install mecab mecab-ko mecab-ko-dic

Install the correct binding:

pip install --no-cache-dir mecab-python3

Test again: python -c "import MeCab; print(MeCab.Tagger('-Owakati').parse('안녕하세요'))" If it works, you’ll see tokenized text (e.g. 안녕 하세요 \n).

Source: myshell-ai/MeloTTS

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