Issues with Lecture 11 code

[johnsonrd58]

TROLLEY['education_level'] = TROLLEY.edu.map(EDUCUATION_MAP)
TROLLEY['education'] = TROLLEY.education_level.map(EDUCUATION_MAP_R)

These two lines of code give all "nas"
im using python 3.12.4 with the pymc kernel in VS code

This code also does not work

EDUCATION_LEVEL_ID, EDUCATION_LEVEL = pd.factorize(TROLLEY.education_level, sort=True)
EDUCATION_LEVEL = [EDUCUATION_MAP_R[e] for e in EDUCATION_LEVEL]
N_EDUCATION_LEVELS = len(EDUCATION_LEVEL)