Unrecognised timezone class <class 'datetime.timezone'>

[jrr96]

The code below (copy pasted from https://plotnine.readthedocs.io/en/stable/tutorials/miscellaneous-manipulating-date-breaks-and-date-labels.html):

from plotnine.data import economics
(ggplot(economics)
 + geom_point(aes('date', 'psavert'))
 + labs(y='personal saving rate')
)

Produces the error:

Unrecognised timezone class <class 'datetime.timezone'>

[has2k1]

Make sure you have the latest version of plotnine and mizani==0.9.2.