Не получается загрузить таблицу русских синонимов с tokenizer: standard

Elastic In Your Native Tongue Вопросы на русском языке
7

Да, с № я получаю

{
  "error": {
    "root_cause": [
      {
        "type": "illegal_argument_exception",
        "reason": "failed to build synonyms"
      }
    ],
    "type": "illegal_argument_exception",
    "reason": "failed to build synonyms",
    "caused_by": {
      "type": "parse_exception",
      "reason": "Invalid synonym rule at line 2",
      "caused_by": {
        "type": "illegal_argument_exception",
        "reason": "term: № was completely eliminated by analyzer"
      }
    }
  },
  "status": 400
}

Это вполне логично