Problem when trying to create a new dataset in project with a Hive table (from Python API)

Hi! I'd like to import a Hive table to a project (from a notebook) using the Dataiku's Python API. The idea is to replicate the process done through the UI (which is successfull, as you may see in the picture below):

After doing it through the UI, then this table appears as a dataset in the 'Dataset' page of the project (this is what I need)

However, when I try to do the same process on a notebook I get an error. I have tried two approaches:

1) First approach:

import dataiku
client = dataiku.api_client()
project = client.get_project('MYPROJECT')
import_definition = project.init_tables_import()
import_definition.add_hive_table("referenciales", "sbl_tipo_identificacion")

prepared_import = import_definition.prepare()
future = prepared_import.execute()

import_result = future.wait_for_result()

Gives the following error:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-52-432f67d71601> in <module>
      2 import_definition.add_hive_table("referenciales", "sbl_tipo_identificacion")
      3 
----> 4 prepared_import = import_definition.prepare()
      5 future = prepared_import.execute()
      6 

~/Dataiku_install/dataiku-dss-8.0.4/python/dataikuapi/dss/project.py in prepare(self)
   1327 
   1328         future = self.client.get_future(ret["jobId"])
-> 1329         future.wait_for_result()
   1330         return TablesPreparedImport(self.client, self.project_key, future.get_result())
   1331 

~/Dataiku_install/dataiku-dss-8.0.4/python/dataikuapi/dss/future.py in wait_for_result(self)
     73         Wait and get the future result
     74         """
---> 75         if self.state.get('hasResult', False):
     76             return self.result_wrapper(self.state.get('result', None))
     77         if self.state is None or not self.state.get('hasResult', False) or self.state_is_peek:

AttributeError: 'NoneType' object has no attribute 'get'

2) Second approach:

from dataiku.core.sql import SQLExecutor2

#Building dataset where the result of the query will be stored.
builder = project.new_managed_dataset_creation_helper("temp_dataset")
builder.with_store_into("hdfs_connection", format_option_id="PARQUET_HIVE")
dataset = builder.create()

executor = SQLExecutor2(connection="referenciales")
executor.exec_recipe_fragment(temp_dataset, "select * from sbl_tipo_identificacion", overwrite_output_schema=True)

When trying this, the following error is printed:

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-33-13217d6dde60> in <module>
      2 
      3 #output_dataset = dataiku.Dataset("temp_outputDataset2")
----> 4 SQLExecutor2.exec_recipe_fragment(output_dataset, streamed_query)

~/Dataiku_install/dataiku-dss-8.0.4/python/dataiku/core/sql.py in exec_recipe_fragment(output_dataset, query, pre_queries, post_queries, overwrite_output_schema, drop_partitioned_on_schema_mismatch)
    181             data={
    182                 "outputDataset": output_dataset.full_name,
--> 183                 "activityId" : spec["currentActivityId"],
    184                 "query" : query,
    185                 "preQueries" : json.dumps(pre_queries),

TypeError: 'NoneType' object is not subscriptable

Anyone knows why do these errors occur? or maybe some other methods to try? Thanks!