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# 7.3.8.3.2. `-3: GRN_NO_SUCH_FILE_OR_DIRECTORY`

## 7.3.8.3.2.1. Major cause

1. If we registered the plugin that we didn’t install yet with `plugin_register`.

   For example, if we executed `plugin_register normalizers/mysql` on Groonga when we didn’t install `groonga-normalizer-mysql` yet.

2. If we used `TokenMecab` when `mecab` didn’t install yet.

## 7.3.8.3.2.2. Major action on this error

1. If we registered the plugin that we didn’t install yet with `plugin_register`.

   We install the target plugin.

2. If we used `TokenMecab` when `mecab` didn’t install yet.

   We install `mecab`.