INFO:robo.solver.bayesian_optimization:Start iteration 3 ...
INFO:robo.solver.bayesian_optimization:Train model...
ERROR:robo.solver.bayesian_optimization:Model could not be trained!
Traceback (most recent call last):
File "example_fmin.py", line 22, in <module>
results = bayesian_optimization(objective_function, lower, upper, num_iterations=50)
File "/dir//python3.6/site-packages/robo/fmin/bayesian_optimization.py", line 137, in bayesian_optimization
x_best, f_min = bo.run(num_iterations)
File "/dir//python3.6/site-packages/robo/solver/bayesian_optimization.py", line 167, in run
new_x = self.choose_next(self.X, self.y, do_optimize)
File "/dir//python3.6/site-packages/robo/solver/bayesian_optimization.py", line 236, in choose_next
self.model.train(X, y, do_optimize=do_optimize)
File "/dir//python3.6/site-packages/robo/models/base_model.py", line 71, in func_wrapper
return func(self, X, y, *args, **kwargs)
File "/dir//python3.6/site-packages/robo/models/gaussian_process_mcmc.py", line 115, in train
len(self.kernel.pars) + 1,
File "/dir//python3.6/site-packages/george/kernels.py", line 66, in __getattr__
raise AttributeError(name)
AttributeError: pars
I am on Mac, pip, python3