Why does the warning occur? And is it necessary to fix it?

[ghost]

The warning is as the following:

lib/python3.6/site-packages/spacy/util.py:275: UserWarning: [W031] Model 'en_vectors_web_lg' (2.1.0) requires spaCy v2.1 and is incompatible with the current spaCy ver
sion (2.3.5). This may lead to unexpected results or runtime errors. To resolve this, download a newer compatible model or retrain your custom model with the current spaCy version. For more details and availabl
e updates, run: python -m spacy validate
  warnings.warn(warn_msg)

Why does the warning occur? And is it necessary to fix it?

[ghost]

I have fixed it by downgrading spaCy to v2.1.