Unable to load trained spacy_stanza model

Having trained a spacy_stanza model to use as a base when annotating with Prodigy I discovered I could not load it once saved. Here is the code. Please advise.

nlp.to_disk('NLP_model_KEK_Brain-Spacy-Training NER Model-JN1-4-7-20--5-7-20') # saving the spacy_stanza model

nlp2 = spacy.load('NLP_model_KEK_Brain-Spacy-Training NER Model-JN1-4-7-20--5-7-20', snlp = snlp) # Loading

---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
~\Anaconda3\envs\spcy\lib\site-packages\spacy\util.py in get_lang_class(lang)
     73         try:
---> 74             module = importlib.import_module(".lang.%s" % lang, "spacy")
     75         except ImportError as err:

~\Anaconda3\envs\spcy\lib\importlib\__init__.py in import_module(name, package)
    125             level += 1
--> 126     return _bootstrap._gcd_import(name[level:], package, level)
    127 

~\Anaconda3\envs\spcy\lib\importlib\_bootstrap.py in _gcd_import(name, package, level)

~\Anaconda3\envs\spcy\lib\importlib\_bootstrap.py in _find_and_load(name, import_)

~\Anaconda3\envs\spcy\lib\importlib\_bootstrap.py in _find_and_load_unlocked(name, import_)

ModuleNotFoundError: No module named 'spacy.lang.stanza_el'

During handling of the above exception, another exception occurred:

ImportError                               Traceback (most recent call last)
<ipython-input-94-37610dc278a7> in <module>
----> 1 nlp2 = spacy.load('NLP_model_KEK_Brain-Spacy-Training NER Model-JN1-4-7-20--5-7-20', snlp = snlp)

~\Anaconda3\envs\spcy\lib\site-packages\spacy\__init__.py in load(name, **overrides)
     28     if depr_path not in (True, False, None):
     29         deprecation_warning(Warnings.W001.format(path=depr_path))
---> 30     return util.load_model(name, **overrides)
     31 
     32 

~\Anaconda3\envs\spcy\lib\site-packages\spacy\util.py in load_model(name, **overrides)
    164             return load_model_from_package(name, **overrides)
    165         if Path(name).exists():  # path to model data directory
--> 166             return load_model_from_path(Path(name), **overrides)
    167     elif hasattr(name, "exists"):  # Path or Path-like to model data
    168         return load_model_from_path(name, **overrides)

~\Anaconda3\envs\spcy\lib\site-packages\spacy\util.py in load_model_from_path(model_path, meta, **overrides)
    194     # language subclass) while keeping top-level language identifier "lang"
    195     lang = meta.get("lang_factory", meta["lang"])
--> 196     cls = get_lang_class(lang)
    197     nlp = cls(meta=meta, **overrides)
    198     pipeline = meta.get("pipeline", [])

~\Anaconda3\envs\spcy\lib\site-packages\spacy\util.py in get_lang_class(lang)
     74             module = importlib.import_module(".lang.%s" % lang, "spacy")
     75         except ImportError as err:
---> 76             raise ImportError(Errors.E048.format(lang=lang, err=err))
     77         set_lang_class(lang, getattr(module, module.__all__[0]))
     78     return registry.languages.get(lang)

ImportError: [E048] Can't import language stanza_el from spacy.lang: No module named 'spacy.lang.stanza_el'

The relevant part in the documentation is the following: