"No constructor found for MrkvArray"

[iworld1991]

Describe the bug
I initizlied a MarkovType based on the most recent release econ-ark 0.15.0 in a freshly created environment. The code is copied as below

hark_mkv = MarkovConsumerType(**hark_mkv_para)

I got the following errors.

ValueError Traceback (most recent call last)
Cell In[11], line 1
----> 1 hark_mkv = MarkovConsumerType(**hark_mkv_para)
2 hark_mkv.cycles = 0
3 hark_mkv.vFuncBool = False

File c:\ProgramData\mambaforge\envs\econ-ark3\Lib\site-packages\HARK\ConsumptionSaving\ConsMarkovModel.py:750, in MarkovConsumerType.init(self, **kwds)
747 params = init_indshk_markov.copy()
748 params.update(kwds)
--> 750 super().init(**params)
751 self.solve_one_period = solve_one_period_ConsMarkov
753 if not hasattr(self, "global_markov"):

File c:\ProgramData\mambaforge\envs\econ-ark3\Lib\site-packages\HARK\ConsumptionSaving\ConsIndShockModel.py:1914, in IndShockConsumerType.init(self, verbose, quiet, **kwds)
1912 # Add consumer-type specific objects, copying to create independent versions
1913 self.solve_one_period = solve_one_period_ConsIndShock
-> 1914 self.update()

File c:\ProgramData\mambaforge\envs\econ-ark3\Lib\site-packages\HARK\ConsumptionSaving\ConsMarkovModel.py:769, in MarkovConsumerType.update(self)
756 def update(self):
757 """
758 Update the Markov array, the income process, the assets grid, and
759 the terminal solution.
(...)
767 None
768 """
--> 769 self.construct("MrkvArray")
770 super().update()

File c:\ProgramData\mambaforge\envs\econ-ark3\Lib\site-packages\HARK\core.py:417, in Model.construct(self, force, *args)
415 continue
416 else:
--> 417 raise ValueError("No constructor found for " + key) from None
419 # Get the names of arguments for this constructor and try to gather them
420 args_needed = get_arg_names(constructor)

ValueError: No constructor found for MrkvArray

[mnwhite]

Version 0.15.0 is not the latest version; 0.15.1 is. And as far as I know, this problem (and another related one) was fixed in #1484 , which has been merged into master, but not put into a release yet. There are a few small PRs that we want to get merged before putting out a new release.

Can you test this with the current version of HARK in the repo?