xonsh: To log full traceback to a file set: $XONSH_TRACEBACK_LOGFILE = <filename>
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/xonsh/__amalgam__.py", line 8436, in _call
    handler(**self._kwargs)
  File "/usr/local/lib/python3.7/site-packages/xontrib/fzf-widgets.xsh", line 57, in custom_keybindings
    @handler('fzf_history_binding')
  File "/usr/local/lib/python3.7/site-packages/xontrib/fzf-widgets.xsh", line 53, in handler
    return bindings.registry.add_binding(key)
AttributeError: 'KeyBindings' object has no attribute 'registry'
Exception raised in event handler; ignored.