Live feed alpaca-backtrader-api - KeyError: 'bidprice'

When stock is hold by exchange or sometimes after overnight I see that type of error. How I can catch this?

  File "/home/x777/anaconda3/envs/env_backtrader/lib/python3.6/site-packages/backtrader/cerebro.py", line 1130, in run
    runstrat = self.runstrategies(iterstrat)
  File "/home/x777/anaconda3/envs/env_backtrader/lib/python3.6/site-packages/backtrader/cerebro.py", line 1301, in runstrategies
    self._runnext(runstrats)
  File "/home/x777/anaconda3/envs/env_backtrader/lib/python3.6/site-packages/backtrader/cerebro.py", line 1545, in _runnext
    drets.append(d.next(ticks=False))
  File "/home/x777/anaconda3/envs/env_backtrader/lib/python3.6/site-packages/backtrader/feed.py", line 407, in next
    ret = self.load()
  File "/home/x777/anaconda3/envs/env_backtrader/lib/python3.6/site-packages/backtrader/feed.py", line 479, in load
    _loadret = self._load()
  File "/home/x777/anaconda3/envs/env_backtrader/lib/python3.6/site-packages/alpaca_backtrader_api/alpacadata.py", line 301, in _load
    ret = self._load_tick(msg)
  File "/home/x777/anaconda3/envs/env_backtrader/lib/python3.6/site-packages/alpaca_backtrader_api/alpacadata.py", line 401, in _load_tick
    msg['bidprice'])
KeyError: 'bidprice'