TypeError：pushDefaultLayers（）接受1个位置参数，但给出了2个

Question

我在创建wat-bridge时输入了此命令'WAT_CONF=config.conf python watbridge.py'，但是却收到类似的错误消息

    Traceback (most recent call last):
  File "watbridge.py", line 40, in <module>
    from wat_bridge.listeners import tg_listener, wa_listener
  File "/home/arpit_goyall/wat-bridge/wat_bridge/listeners.py", line 34, in <module>
    from wat_bridge.wa import WA_STACK, _connect_signal
  File "/home/arpit_goyall/wat-bridge/wat_bridge/wa.py", line 127, in <module>
    .pushDefaultLayers(True)
TypeError: pushDefaultLayers() takes 1 positional argument but 2 were given