Failed to find component class for 'WhitespaceTokenizer'

I have create Forms bot and tried to train it , but getting below error

> Exception: Failed to find component class for 'WhitespaceTokenizer'. Unknown component name. Check your configured pipeline and make sure the mentioned component is not misspelled. If you are creating your own component, make sure it is either listed as part of the `component_classes` in `` or is a proper name of a class in a module.
> Makefile:28: recipe for target 'train-nlu' failed

for this i have verified class also , it contains WhitespaceTokenizer

component_classes = [ SpacyNLP, MitieNLP, SpacyEntityExtractor, MitieEntityExtractor, CRFEntityExtractor, DucklingHTTPExtractor, EntitySynonymMapper, SpacyFeaturizer, MitieFeaturizer, NGramFeaturizer, RegexFeaturizer, CountVectorsFeaturizer, MitieTokenizer, SpacyTokenizer, WhitespaceTokenizer, JiebaTokenizer, SklearnIntentClassifier, MitieIntentClassifier, KeywordIntentClassifier, EmbeddingIntentClassifier ]

I am using below pipeline in config file

language: en


  • name: WhitespaceTokenizer
  • name: CRFEntityExtractor
  • name: EntitySynonymMapper
  • name: CountVectorsFeaturizer token_pattern: (?u)\b\w+\b
  • name: EmbeddingIntentClassifier
  • name: DucklingHTTPExtractor url: http://localhost:8000 dimensions:
    • number


  • name: FallbackPolicy
  • name: MemoizationPolicy
  • name: FormPolicy
  • name: MappingPolicy

could you please help me out in fixing this issue

Can you try creating a new bot using rasa init and seeing if that works?