AttributeError: '_thread._local' object has no attribute '_pydal_connection_140103876850296_30686'

gistfile1.txt

Traceback (most recent call last):
  File "/home/schemelab/install/miniconda3/lib/python3.6/site-packages/pyrogram/client/client.py", line 707, in update_worker
    {i.id: i for i in update[2]}
  File "/home/schemelab/prg/surgetrader/src/lib/telegram.py", line 78, in update_handler
    lib.buy.process(ini, [market])
  File "/home/schemelab/prg/surgetrader/src/lib/buy.py", line 412, in process
    buycoin(config_file, user_config, exchange, top_coins)
  File "/home/schemelab/prg/surgetrader/src/lib/buy.py", line 253, in buycoin
    _buycoin(config_file, user_config, exchange, market, avail)
  File "/home/schemelab/prg/surgetrader/src/lib/buy.py", line 242, in _buycoin
    record_buy(config_file, result['result']['uuid'], mkt, rate, amount_of_coin)
  File "/home/schemelab/prg/surgetrader/src/lib/buy.py", line 134, in record_buy
    order_id=order_id, market=mkt, purchase_price=rate, amount=amount)
  File "/home/schemelab/install/miniconda3/lib/python3.6/site-packages/pydal/objects.py", line 753, in insert
    ret = self._db._adapter.insert(self, row.op_values())
  File "/home/schemelab/install/miniconda3/lib/python3.6/site-packages/pydal/adapters/base.py", line 486, in insert
    raise e
  File "/home/schemelab/install/miniconda3/lib/python3.6/site-packages/pydal/adapters/base.py", line 481, in insert
    self.execute(query)
  File "/home/schemelab/install/miniconda3/lib/python3.6/site-packages/pydal/adapters/__init__.py", line 63, in wrap
    if not args[0].connection:
  File "/home/schemelab/install/miniconda3/lib/python3.6/site-packages/pydal/connection.py", line 36, in connection
    return getattr(THREAD_LOCAL, self._connection_uname_)
AttributeError: '_thread._local' object has no attribute '_pydal_connection_140103876850296_30686'

I am facing the same error.
Do we have an explanation for this error?
Do we know how to resolve it?

I dont know. I would ask on their mailing lists.