@schema
class BehaviourRecording(dj.Manual):
     definition = """
     # Individual recordings within a session
     -> Session
     recording_number: int               # recording number within a session
     ---
     metadata_path : varchar(128)       # name of the experimenter
     video_path : varchar(128)       # name of the experimenter
     tracked : enum('Y', 'N')   # asdas
     dlc_data: varchar(128)      # path to .h5 produced as a result of dlc tracking
     """

recordings = BehaviourRecording()
recordings.preview()
Traceback (most recent call last):
  File "C:\Users\Federico\Miniconda3\envs\CVenv\lib\site-packages\IPython\core\interactiveshell.py", line 3265, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-10-5ee312724859>", line 1, in <module>
    recordings.preview()
  File "C:\Users\Federico\Miniconda3\envs\CVenv\lib\site-packages\datajoint\relational_operand.py", line 362, in preview
    tuples = rel.fetch(limit=limit+1)
  File "C:\Users\Federico\Miniconda3\envs\CVenv\lib\site-packages\datajoint\fetch.py", line 59, in __call__
    cur = self._relation.cursor(as_dict=as_dict, limit=limit, offset=offset, order_by=order_by)
  File "C:\Users\Federico\Miniconda3\envs\CVenv\lib\site-packages\datajoint\relational_operand.py", line 530, in cursor
    return self.connection.query(sql, as_dict=as_dict)
  File "C:\Users\Federico\Miniconda3\envs\CVenv\lib\site-packages\datajoint\connection.py", line 136, in query
    cur.execute(query, args)
  File "C:\Users\Federico\Miniconda3\envs\CVenv\lib\site-packages\pymysql\cursors.py", line 170, in execute
    result = self._query(query)
  File "C:\Users\Federico\Miniconda3\envs\CVenv\lib\site-packages\pymysql\cursors.py", line 328, in _query
    conn.query(q)
  File "C:\Users\Federico\Miniconda3\envs\CVenv\lib\site-packages\pymysql\connections.py", line 515, in query
    self._execute_command(COMMAND.COM_QUERY, sql)
  File "C:\Users\Federico\Miniconda3\envs\CVenv\lib\site-packages\pymysql\connections.py", line 745, in _execute_command
    raise err.InterfaceError("(0, '')")
pymysql.err.InterfaceError: (0, '')