Internal Server Error

The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.

[2018-02-21 01:21:04,466] ERROR in app: Exception on /EOS_BTC_binance/query/ [POST]
Traceback (most recent call last):
  File "/home/ubuntu/.local/lib/python3.5/site-packages/flask/app.py", line 1982, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/ubuntu/.local/lib/python3.5/site-packages/flask/app.py", line 1614, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/ubuntu/.local/lib/python3.5/site-packages/flask/app.py", line 1517, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/home/ubuntu/.local/lib/python3.5/site-packages/flask/_compat.py", line 33, in reraise
    raise value
  File "/home/ubuntu/.local/lib/python3.5/site-packages/flask/app.py", line 1612, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/ubuntu/.local/lib/python3.5/site-packages/flask/app.py", line 1598, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/ubuntu/.local/lib/python3.5/site-packages/sqlite_web/sqlite_web.py", line 185, in inner
    return fn(table, *args, **kwargs)
  File "/home/ubuntu/.local/lib/python3.5/site-packages/sqlite_web/sqlite_web.py", line 452, in table_query
    return export(table, sql, 'csv')
  File "/home/ubuntu/.local/lib/python3.5/site-packages/sqlite_web/sqlite_web.py", line 506, in export
    dataset.freeze(query, export_format, file_obj=buf, **kwargs)
  File "/home/ubuntu/.local/lib/python3.5/site-packages/playhouse/dataset.py", line 131, in freeze
    exporter.export(file_obj, **kwargs)
  File "/home/ubuntu/.local/lib/python3.5/site-packages/playhouse/dataset.py", line 301, in export
    for row in self.query.tuples():
  File "/home/ubuntu/.local/lib/python3.5/site-packages/peewee.py", line 1533, in __iter__
    self._ensure_execution()
  File "/home/ubuntu/.local/lib/python3.5/site-packages/peewee.py", line 1530, in _ensure_execution
    self.execute()
  File "/home/ubuntu/.local/lib/python3.5/site-packages/peewee.py", line 1447, in inner
    return method(self, database, *args, **kwargs)
  File "/home/ubuntu/.local/lib/python3.5/site-packages/peewee.py", line 1518, in execute
    return self._execute(database)
  File "/home/ubuntu/.local/lib/python3.5/site-packages/peewee.py", line 1571, in _execute
    self._cursor_wrapper = self._get_cursor_wrapper(cursor)
  File "/home/ubuntu/.local/lib/python3.5/site-packages/peewee.py", line 5409, in _get_cursor_wrapper
    return ModelTupleCursorWrapper(cursor, self.model, self._returning)
AttributeError: 'ModelRaw' object has no attribute '_returning'
64.229.97.140 - - [21/Feb/2018 01:21:04] "POST /EOS_BTC_binance/query/ HTTP/1.1" 500 -