收到以下错误消息。缺少什么？
[19:53:22] I/direct - Using ChromeDriver directly...
[19:53:22] I/launcher - Running 1 instances of WebDriver
[19:53:24 INFO(qe-reporter.js:71)] Executed 0 of 0 specs, SUCCESS: 0, FAILED: 0, PENDING: 0, SKIPPED: 0, Duration: 0 sec.
[19:53:24] E/launcher - unknown error: missing or invalid 'width' or 'height'