Error: 'null' cannot be coerced to a valid version number

Question

Appium 服务器显示 'null' 无法强制转换为有效的版本号错误。

以下是我使用过的 DesiredCapabilities

DesiredCapabilities caps = new DesiredCapabilities();
caps.setCapability(MobileCapabilityType.UDID, udid);
caps.setCapability(MobileCapabilityType.NO_RESET, noReset);
caps.setCapability(MobileCapabilityType.NEW_COMMAND_TIMEOUT, 600);
caps.setCapability(MobileCapabilityType.PLATFORM_NAME, MobilePlatform.IOS);
caps.setCapability(MobileCapabilityType.DEVICE_NAME, "iPhone");
caps.setCapability(MobileCapabilityType.APP, app.getAbsolutePath());
caps.setCapability(MobileCapabilityType.AUTOMATION_NAME, "XCUITest");
caps.setCapability("xcodeOrgId", myXcodeOrgId);
caps.setCapability("xcodeSigningId", "iPhone Developer");
caps.setCapability("showXcodeLog", true);
driver = new IOSDriver(new URL("http://" + host + ":" + port + "/wd/hub"), caps);

appium 服务器日志如下：

Creating session with W3C capabilities: {"alwaysMatch":{"platformNa...
[BaseDriver] Session created with session id: 77cbca4b-157d-462e-ab26-5cc9cc47c7a9
[debug] [XCUITest] Current user: 'infotmt'
[XCUITest] Error: 'null' cannot be coerced to a valid version number
[XCUITest]     at coerceVersion (/usr/local/lib/node_modules/appium/node_modules/appium-support/lib/util.js:241:11)
[XCUITest]     at Object.coerceVersion [as compareVersions] (/usr/local/lib/node_modules/appium/node_modules/appium-support/lib/util.js:268:35)
[XCUITest]     at XCUITestDriver.compareVersions [as start] (/usr/local/lib/node_modules/appium/node_modules/appium-xcuitest-driver/lib/driver.js:263:14)
[debug] [XCUITest] Not clearing log files. Use `clearSystemFiles` capability to turn on.
[debug] [BaseDriver] Event 'newSessionStarted' logged at 1553847186978 (13:58:06 GMT+0545 (Nepal Time))
[debug] [W3C] Encountered internal error running command: Error: 'null' cannot be coerced to a valid version number
[debug] [W3C]     at coerceVersion (/usr/local/lib/node_modules/appium/node_modules/appium-support/lib/util.js:241:11)
[debug] [W3C]     at Object.coerceVersion [as compareVersions] (/usr/local/lib/node_modules/appium/node_modules/appium-support/lib/util.js:268:35)
[debug] [W3C]     at XCUITestDriver.compareVersions [as start] (/usr/local/lib/node_modules/appium/node_modules/appium-xcuitest-driver/lib/driver.js:263:14)
[HTTP] <-- POST /wd/hub/session 500 29 ms - 597
[HTTP]

我正在使用

Appium server version - 1.12.1 
Java client Version - 7.0.0

Answer 1

在 Appium 1.12.1 中，必须设置平台版本。待添加代码：

caps.setCapability("platformVersion", "12.2");

12.2是iOS的版本。

Error: 'null' cannot be coerced to a valid version number

Error: 'null' cannot be coerced to a valid version number

appium

appium-ios

xcuitest