初学appium，报服务端的错误

Question

下面这段代码，APP能启动，能打印111，每次在执行
self.driver.find_element_by_android_uiautomator('new UiSelector().className("android.widget.TextView").text("我")').click() 的时候就报错：An unknown server-side error occurred while processing the command，跪求各位大神帮忙解答

class LoginApp(unittest.TestCase):
def setUp(self):
desired_caps = {}
desired_caps['platformName'] = 'Android'
desired_caps['platformVersion'] = '4.2.2'
desired_caps['deviceName'] = 'Droid4X-WIN'
desired_caps['appPackage'] = 'com.junte.onlinefinance'
desired_caps['appActivity'] = '.ui.activity.SpalshActivity'
self.driver = webdriver.Remote('http://127.0.0.1:4723/wd/hub',desired_caps)
self.driver.implicitly_wait(5)

def login_test(self):

    print "1111"
    self.driver.find_element_by_android_uiautomator('new UiSelector().className("android.widget.TextView").text("我")').click()
    print "222"

Answer 1

重装了APPium就好了