InvalidConfigException for my custom tokenizer class

Rasa Open Source
1

I am trying to create my custom tokenizer class with the following after rasa init:

KLPTTokenizer.py (the same path of config.yml):

from __future__ import annotations
from typing import Any, Dict, Text, List
from rasa.engine.recipes.default_recipe import DefaultV1Recipe
from rasa.nlu.tokenizers.tokenizer import Tokenizer, Token
from klpt.tokenize import Tokenize
from rasa.shared.nlu.training_data.message import Message


@DefaultV1Recipe.register(
    component_types=[DefaultV1Recipe.ComponentType.MESSAGE_TOKENIZER],
    is_trainable=True
)
class KLPTTokenizer(Tokenizer):

    def __init__(self, config: Dict[Text, Any]) -> None:
        super().__init__(config)
        self._tokenizer = Tokenize("Kurmanji", "Latin")

    def tokenize(self, message: Message, attribute: Text) -> List[Token]:
        return self._tokenizer.word_tokenize(message.get(attribute))

    @staticmethod
    def required_packages() -> List[Text]:
        current = super().required_packages()
        current.append("klpt")
        return current

config.yml:

recipe: default.v1
language: ku
pipeline:
- name: KLPTTokenizer
  component_type: message_tokenizer
  class_name: KLPTTokenizer
policies:

requirements.txt (all installed):

rasa[full]
klpt
rasa-nlu

The rasa version:

Rasa Version      :         3.4.2
Minimum Compatible Version: 3.0.0
Rasa SDK Version  :         3.4.0
Python Version    :         3.8.10
Operating System  :         Linux-5.15.0-58-generic-x86_64-with-glibc2.29
Python Path       :         /home/cergo/Desktop/Kurdish-Rasa/venv/bin/python

The error I get when run rasa train:

InvalidConfigException: Can't load class for name 'KLPTTokenizer'. Please make sure to provide a valid name or module path and to register it using the '@DefaultV1Recipe.register' decorator.