appium-launch activity选择错误时，提示“A new session could not be created. (Original error: Permission to start activity denied”

capabilities.setCapability("appActivity", ".activities.MainActivity");

该属性选择错误时提示：A new session could not be created. (Original error: Permission to start activity denied

等同于appium的GUI界面中的launch activity，选择正确的属性值后运行正常