I installed databricks-sql-connector in Pycharm.

Then i run the query below based on docs.

I refer this docs.

(https://docs.databricks.com/dev-tools/python-sql-connector.html)

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from databricks import sql

import os

with sql.connect(server_hostname = os.getenv("***"),

http_path = os.getenv("***"),

access_token = os.getenv("***")) as connection:

with connection.cursor() as cursor:

cursor.execute("SELECT * FROM default.diamonds LIMIT 2")

result = cursor.fetchall()

for row in result:

print(row)

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However, I faced the error below.

(AttributeError: 'NoneType' object has no attribute 'startswith')

 File "C:\Users\MZC01-SSLEE\PycharmProjects\sqlconnector\venv\lib\site-packages\databricks\sql\__init__.py", line 50, in connect

  return Connection(server_hostname, http_path, access_token, **kwargs)

 File "C:\Users\MZC01-SSLEE\PycharmProjects\sqlconnector\venv\lib\site-packages\databricks\sql\client.py", line 156, in __init__

  auth_provider = get_python_sql_connector_auth_provider(

 File "C:\Users\MZC01-SSLEE\PycharmProjects\sqlconnector\venv\lib\site-packages\databricks\sql\auth\auth.py", line 84, in get_python_sql_connector_auth_provider

  hostname=normalize_host_name(hostname),

 File "C:\Users\MZC01-SSLEE\PycharmProjects\sqlconnector\venv\lib\site-packages\databricks\sql\auth\auth.py", line 77, in normalize_host_name

  maybe_scheme = "https://" if not hostname.startswith("https://") else ""

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

Could you give me some advice to solve this?