Appium 困惑好几天的问题：error: Failed to start an Appium session, err was: Error: The following desired capabilities are required, but were not provided: platformName 怎么就解决啊！！！
使用的是 appium-1.2 的在运行脚本的时候报这个错：error: Failed to start an Appium session, err was: Error: The following desired capabilities are required, but were not provided: platformName；具体如下：
求大神解答！！！！！
把原来的
desired_caps['device'] = 'Android'
改成
desired_caps['platformName'] = 'Android'
具体的看 appium 更新文档
应该从 1.0 就改了
我也遇到了这个问题：
info: --> POST /wd/hub/session {"desiredCapabilities":{"platformName":"Android","deviceName":"Genymotion","appPackage":"Package_name","appActivity":"Activity_name","app":"apk_path"}}
info: Client User-Agent string: appium/ruby_lib/7.0.0
error: Trying to run a session for device 'android' but that device hasn't been configured. Run config
我已经改成了 platformName 了，还有哪里有问题？Appium 是 1.2.0
