driver = webdriver.Remote(“httpL//127.0.0.1:4723/wd/hub”, capabilities)

driver.swipe(900,500,100,500)

当程序执行到driver.swipe的时候报错，报错信息如下：
Traceback (most recent call last):
File “appium_python.py”, line 27, in
swipeleft(driver)
File “appium_python.py”, line 24, in swipeleft
driver.swipe(x1,y1,x2,y1,t)
File “C:\Users\66447\Desktop\muketest2\muketest\lib\site-packages\appium\webdriver\webdriver.py”, line 241, in swipe
action.perform()
File “C:\Users\66447\Desktop\muketest2\muketest\lib\site-packages\appium\webdriver\common\touch_action.py”, line 94, in perform
self._driver.execute(Command.TOUCH_ACTION, params)
File “C:\Users\66447\Desktop\muketest2\muketest\lib\site-packages\selenium\webdriver\remote\webdriver.py”, line 173, in execute
self.error_handler.check_response(response)
File “C:\Users\66447\Desktop\muketest2\muketest\lib\site-packages\appium\webdriver\errorhandler.py”, line 24, in check_response
super(MobileErrorHandler, self).check_response(response)
File “C:\Users\66447\Desktop\muketest2\muketest\lib\site-packages\selenium\webdriver\remote\errorhandler.py”, line 138, in check_r
esponse
if ‘message’ in value:
TypeError: a bytes-like object is required, not ‘str’

请问老师这个错误是什么原因呢？