this is a code and i ma getting error which is
NameError: name 'pipe' is not defined

Code:
nlp = spacy.blank('en')

def train_model(train_data):
  if 'ner' not in nlp.pipe_names:
    ner = nlp.create_pipe('ner')
    nlp.add_pipe(ner, last=True)

  for _, annotation in train_data:
    for ent in annotation['entities']:
      ner.add_label(ent[2])
...