I overcomed the error. It is related to helm version.
Now I have a new error with the latest version you recommended.
Traceback (most recent call last):
File "/usr/local/lib/python3.8/dist-packages/jupyterhub/app.py", line 2856, in launch_instance_async
await self.initialize(argv)
File "/usr/local/lib/python3.8/dist-packages/jupyterhub/app.py", line 2391, in initialize
self.init_db()
File "/usr/local/lib/python3.8/dist-packages/jupyterhub/app.py", line 1589, in init_db
dbutil.upgrade_if_needed(self.db_url, log=self.log)
File "/usr/local/lib/python3.8/dist-packages/jupyterhub/dbutil.py", line 115, in upgrade_if_needed
orm.check_db_revision(engine)
File "/usr/local/lib/python3.8/dist-packages/jupyterhub/orm.py", line 771, in check_db_revision
current_table_names = set(engine.table_names())
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/engine/base.py", line 2316, in table_names
with self._optional_conn_ctx_manager(connection) as conn:
File "/usr/lib/python3.8/contextlib.py", line 113, in __enter__
return next(self.gen)
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/engine/base.py", line 2086, in _optional_conn_ctx_manager
with self._contextual_connect() as conn:
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/engine/base.py", line 2302, in _contextual_connect
self._wrap_pool_connect(self.pool.connect, None),
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/engine/base.py", line 2339, in _wrap_pool_connect
Connection._handle_dbapi_exception_noconnection(
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/engine/base.py", line 1583, in _handle_dbapi_exception_noconnection
util.raise_(
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/util/compat.py", line 182, in raise_
raise exception
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/engine/base.py", line 2336, in _wrap_pool_connect
return fn()
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/pool/base.py", line 364, in connect
return _ConnectionFairy._checkout(self)
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/pool/base.py", line 778, in _checkout
fairy = _ConnectionRecord.checkout(pool)
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/pool/base.py", line 495, in checkout
rec = pool._do_get()
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/pool/impl.py", line 241, in _do_get
return self._create_connection()
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/pool/base.py", line 309, in _create_connection
return _ConnectionRecord(self)
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/pool/base.py", line 440, in __init__
self.__connect(first_connect_check=True)
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/pool/base.py", line 661, in __connect
pool.logger.debug("Error on connect(): %s", e)
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/util/langhelpers.py", line 68, in __exit__
compat.raise_(
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/util/compat.py", line 182, in raise_
raise exception
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/pool/base.py", line 656, in __connect
connection = pool._invoke_creator(self)
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/engine/strategies.py", line 114, in connect
return dialect.connect(*cargs, **cparams)
File "/usr/local/lib/python3.8/dist-packages/sqlalchemy/engine/default.py", line 493, in connect
return self.dbapi.connect(*cargs, **cparams)
sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) unable to open database file
(Background on this error at: http://sqlalche.me/e/13/e3q8)
Thanks