1. Appium capability sets：

{
"platformName": "ios",
"platformVersion": "12.1.4",
"deviceName": "iPhone X",
"bundleId": "take your app id here",
"noReset": "true",
"automationName": "xcuitest",
"udid": "find this id by idevice_id -l",
"xcodeOrgId": "in put Team ID",
"xcodeSigningId": "iPhone Developer"
}

1. Update webdriveragent project conf
   2.1 WebDriverAgentLib: Bundle Identifier -> com.aaaa.wda.lib
   2.2 WebDriverAgentLib: Signing(Debug) Team-> your account,Signing Certificate -> iOS Developer
   2.3 WebDriverRunner Signing -> check Automatically manage signing
   2.4 IntegrationApp: Bundle Identifier -> com.aaaa.wda.integrationApp,Signing -> check Automatically manage signing

2. Run IntegrationApp, run WebDriverAgentLib, run WebDriverRunner

Ultimate Plan ： Reinstall Appium and try my step again.