The contemporary seaborn lineplot() does not accept x and y as positional arguments.

[alxfed]

You need to specify the names of the arguments.
NOT : ax = sns.lineplot(x, dist.Beta(w + 1, n - w + 1).log_prob(x).exp())
but : ax = sns.lineplot(x=x, y=dist.Beta(w + 1, n - w + 1).log_prob(x).exp())
... etc.

[fehiepsi]

Thanks @alxfed! The code in this repo is not maintained. Please checkout the numpyro version https://github.com/fehiepsi/rethinking-numpyro for working codes.