Error while trying to use uiautomator modules

[skempegouda]

..\conftest.py:9: in test_setup
d.demo.close_all()
......\lib\demo.py:412: in close_all
self.device.press.recent()
........\venv\lib\site-packages\uiautomator_init_.py:74: in call
return self.func(*args, **kwargs)
........\venv\lib\site-packages\uiautomator_init_.py:787: in press
return self.server.jsonrpc.pressKey(str(key))
........\venv\lib\site-packages\uiautomator_init.py:421: in wrapper
return method_obj(*args, **kwargs)
........\venv\lib\site-packages\uiautomator_init.py:132: in call
"%s: %s" % (jsonresult["error"]["data"]["exceptionTypeName"], jsonresult["error"]["message"])
E TypeError: string indices must be integers