问如何解决在使用prophet时出现的AttributeError错误？

EN

AttributeError                            Traceback (most recent call last)
<ipython-input-18-70a8fe714d7e> in <module>
----> 1 model = Prophet()

~\anaconda3\lib\site-packages\prophet\forecaster.py in __init__(self, growth, changepoints, n_changepoints, changepoint_range, yearly_seasonality, weekly_seasonality, daily_seasonality, holidays, seasonality_mode, seasonality_prior_scale, holidays_prior_scale, changepoint_prior_scale, mcmc_samples, interval_width, uncertainty_samples, stan_backend)
    139         self.fit_kwargs = {}
    140         self.validate_inputs()
--> 141         self._load_stan_backend(stan_backend)
    142 
    143     def _load_stan_backend(self, stan_backend):

~\anaconda3\lib\site-packages\prophet\forecaster.py in _load_stan_backend(self, stan_backend)
    152             self.stan_backend = StanBackendEnum.get_backend_class(stan_backend)()
    153 
--> 154         logger.debug("Loaded stan backend: %s", self.stan_backend.get_type())
    155 
    156     def validate_inputs(self):

AttributeError: 'Prophet' object has no attribute 'stan_backend'