ChatterBot: (sqlite3.OperationalError) cannot change into wal mode from within a transaction

>>> bot = ChatBot('new man')

Traceback (most recent call last):
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\engine\base.py", line 2147, in _wrap_pool_connect
    return fn()
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\pool.py", line 387, in connect
    return _ConnectionFairy._checkout(self)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\pool.py", line 766, in _checkout
    fairy = _ConnectionRecord.checkout(pool)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\pool.py", line 516, in checkout
    rec = pool._do_get()
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\pool.py", line 1229, in _do_get
    return self._create_connection()
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\pool.py", line 333, in _create_connection
    return _ConnectionRecord(self)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\pool.py", line 461, in __init__
    self.__connect(first_connect_check=True)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\pool.py", line 663, in __connect
    pool.dispatch.connect(self.connection, self)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\event\attr.py", line 218, in __call__
    fn(*args, **kw)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\chatterbot\storage\sql_storage.py", line 70, in set_sqlite_pragma
    dbapi_connection.execute('PRAGMA journal_mode=WAL')
sqlite3.OperationalError: cannot change into wal mode from within a transaction

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "<pyshell#2>", line 1, in <module>
    bot = ChatBot('new man')
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\chatterbot\chatterbot.py", line 39, in __init__
    self.storage = utils.initialize_class(storage_adapter, **kwargs)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\chatterbot\utils.py", line 33, in initialize_class
    return Class(**kwargs)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\chatterbot\storage\sql_storage.py", line 77, in __init__
    if not self.engine.dialect.has_table(self.engine, 'Statement'):
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\dialects\sqlite\base.py", line 1181, in has_table
    connection, "table_info", table_name, schema=schema)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\dialects\sqlite\base.py", line 1572, in _get_table_pragma
    cursor = connection.execute(statement)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\engine\base.py", line 2063, in execute
    connection = self.contextual_connect(close_with_result=True)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\engine\base.py", line 2112, in contextual_connect
    self._wrap_pool_connect(self.pool.connect, None),
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\engine\base.py", line 2151, in _wrap_pool_connect
    e, dialect, self)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\engine\base.py", line 1465, in _handle_dbapi_exception_noconnection
    exc_info
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\util\compat.py", line 203, in raise_from_cause
    reraise(type(exception), exception, tb=exc_tb, cause=cause)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\util\compat.py", line 186, in reraise
    raise value.with_traceback(tb)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\engine\base.py", line 2147, in _wrap_pool_connect
    return fn()
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\pool.py", line 387, in connect
    return _ConnectionFairy._checkout(self)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\pool.py", line 766, in _checkout
    fairy = _ConnectionRecord.checkout(pool)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\pool.py", line 516, in checkout
    rec = pool._do_get()
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\pool.py", line 1229, in _do_get
    return self._create_connection()
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\pool.py", line 333, in _create_connection
    return _ConnectionRecord(self)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\pool.py", line 461, in __init__
    self.__connect(first_connect_check=True)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\pool.py", line 663, in __connect
    pool.dispatch.connect(self.connection, self)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\sqlalchemy\event\attr.py", line 218, in __call__
    fn(*args, **kw)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\chatterbot\storage\sql_storage.py", line 70, in set_sqlite_pragma
    dbapi_connection.execute('PRAGMA journal_mode=WAL')
sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) cannot change into wal mode from within a transaction

>>> bot = ChatBot('new man')
after this states 

(sqlite3.OperationalError) cannot change into wal mode from within a transaction