nbformat 5.7.0 MissingIDFieldWarning

I have the following warning:

/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/nbformat/__init__.py:128: MissingIDFieldWarning: Code cell is missing an id field, this will become a hard error in future nbformat versions. You may want to use `normalize()` on your notebooks before validations (available since nbformat 5.1.4). Previous versions of nbformat are fixing this issue transparently, and will stop doing so in the future.
validate(nb)

I have read another issue (#303) but I do not understand what is that I am supposed to do. Appreciate help please