LexicalSyntacticFeaturizer can be used standalone?

Rasa Open Source
1 
- name: WhitespaceTokenizer
- name: LexicalSyntacticFeaturizer
- name: DIETClassifier
  epochs: 100
  constrain_similarities: true

Above is a part of config.yml I used. When LexicalSyntacticFeaturizer is used stand alone, it gets an error below. Does this mean LexicalSyntacticFeaturizer needs to couple with other featurizers?

raise GraphComponentException(

rasa.engine.exceptions.GraphComponentException: 
Error running graph component for node train_DIETClassifier2.