firefox中的java Selenium Webdriver元素不可点击错误

Question

chrome驱动程序中经常出现的元素“不可点击”错误也出现在firefox中。错误消息显示：

  Exception in thread "main" org.openqa.selenium.WebDriverException: Element is not clickable at point (141, 299.29998779296875). Other element would receive the click: <div class="showOnTop" id="loadingPanelContainer"></div>
Command duration or timeout: 209 milliseconds
Build info: version: '2.51.0', revision: '1af067dbcaedd7d2ab9af5151fc471d363d97193', time: '2016-02-05 11:20:57'
System info: host: 'Bhaveen-ThinkPad', ip: '127.0.1.1', os.name: 'Linux', os.arch: 'i386', os.version: '3.13.0-77-generic', java.version: '1.7.0_95'
Session ID: 08e0d738-b946-4886-a179-9659d44b717b
Driver info: org.openqa.selenium.firefox.FirefoxDriver
Capabilities [{platform=LINUX, acceptSslCerts=true, javascriptEnabled=true, cssSelectorsEnabled=true, databaseEnabled=true,    browserName=firefox, handlesAlerts=true, nativeEvents=false, webStorageEnabled=true, rotatable=false, locationContextEnabled=true,  applicationCacheEnabled=true, takesScreenshot=true, version=44.0.2}]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
    at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:206)
    at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:158)
    at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:678)
    at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:327)
    at org.openqa.selenium.remote.RemoteWebElement.click(RemoteWebElement.java:85)
    at config.KeyActions.handleLeftMenu(KeyActions.java:479)
    at scripts.Vital_Data_Script.setVitalData(Vital_Data_Script.java:383)
    at scripts.Vital_Data_Script.executeActions(Vital_Data_Script.java:95)
    at scripts.Vital_Data_Script.executeTestCase(Vital_Data_Script.java:60)
    at scripts.Vital_Data_Script.main(Vital_Data_Script.java:31)