Prophet' object has no attribute 'stan_backend

[LoanSarazin]

Hello, I al running two different notebooks in the same conda env, and in one I get the error ['Prophet' object has no attribute 'stan_backend'](), but not in the other.

It appends direcly after doing from prophet import Prophet m = Prophet

pystan has been installed in v2.19.1.1, and I am using python 3.8.

[rahul4tripathi2]

use CMDSTANPY is backend m = Prophet(uncertainty_samples=100,stan_backend='CMDSTANPY', growth='logistic', seasonality_mode='multiplicative',changepoint_prior_scale=0.5, )

[WardBrian]

Closing in favor of #2462