analytics-cloud-export-api-wrapper: how to resolve an error at sac.getModelMetadata(model_id)?

[MJUDI]

KeyError                                  Traceback (most recent call last)
File ~\Documents\WinPython\WPy64-31241\notebooks\sacapi\sacapi.py:614, in SACConnection.getModelMetadata(self, providerID)
    613 mdMembers = {}
--> 614 for cdMember in currDimResponseJson["value"]:
    615     if "DATE" in cdMember:

KeyError: 'value'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
Cell In[17], line 2
      1 # 4 Get metadata with connection from Data Import Service
----> 2 metadata = sac.getModelMetadata(model_id)
      3 dimension_keys = metadata.dimensions.keys()
      4 print([key for key in dimension_keys])

File ~\Documents\WinPython\WPy64-31241\notebooks\sacapi\sacapi.py:649, in SACConnection.getModelMetadata(self, providerID)
    647 except Exception as e:
    648     errorMsg = "Unknown error during token acquisition."
--> 649     if e.status_code:
    650         errorMsg = "%s  Status code %s from server.  %s" % (errorMsg, e.status_code, e.error)
    651         raise RESTError(errorMsg)

AttributeError: 'KeyError' object has no attribute 'status_code'

I would appreciate any help or pointers. Thanks! MJ