"cannot focus element" exception while trying to upload an attachment using selenium - selenium

Question

While trying to upload an attachment, trying to send the keys instead of opening the OS based file explorer window as sending the path to the file would be easy.
Tried with different element identifiers, still not able to send the keys. mentioned the element HTML below.
Attached the image of element.
Tried Below Xpath,
//*[#id='fileListVideo']//*[starts-with(#class,'qq-upload-button')]
Error Log:
org.openqa.selenium.WebDriverException: unknown error: cannot focus element
(Session info: chrome=66.0.3359.181)
(Driver info: chromedriver=2.39.562713 (dd642283e958a93ebf6891600db055f1f1b4f3b2),platform=Mac OS X 10.13.4 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 0 milliseconds
Build info: version: '3.12.0', revision: '7c6e0b3', time: '2018-05-08T14:04:26.12Z'
System info: host: 'nagarjunaMBP.local', ip: 'fe80:0:0:0:c2e:b816:67ae:922b%en0', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.13.4', java.version: '1.8.0_60'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities {acceptInsecureCerts: false, acceptSslCerts: false, applicationCacheEnabled: false, browserConnectionEnabled: false, browserName: chrome, chrome: {chromedriverVersion: 2.39.562713 (dd642283e958a9..., userDataDir: /var/folders/g4/dylg4g7s7wb...}, cssSelectorsEnabled: true, databaseEnabled: false, handlesAlerts: true, hasTouchScreen: false, javascriptEnabled: true, locationContextEnabled: true, mobileEmulationEnabled: false, nativeEvents: true, networkConnectionEnabled: false, pageLoadStrategy: normal, platform: MAC, platformName: MAC, rotatable: false, setWindowRect: true, takesHeapSnapshot: true, takesScreenshot: true, unexpectedAlertBehaviour: , unhandledPromptBehavior: , version: 66.0.3359.181, webStorageEnabled: true}
Session ID: 38b991ebd4acf37fd0aefaef902853f9
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:214)
at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:166)
at org.openqa.selenium.remote.http.JsonHttpResponseCodec.reconstructValue(JsonHttpResponseCodec.java:40)
at org.openqa.selenium.remote.http.AbstractHttpResponseCodec.decode(AbstractHttpResponseCodec.java:80)
at org.openqa.selenium.remote.http.AbstractHttpResponseCodec.decode(AbstractHttpResponseCodec.java:44)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:158)
at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:83)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:543)
at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:276)
at org.openqa.selenium.remote.RemoteWebElement.sendKeys(RemoteWebElement.java:100)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.openqa.selenium.support.pagefactory.internal.LocatingElementHandler.invoke(LocatingElementHandler.java:51)
at com.sun.proxy.$Proxy17.sendKeys(Unknown Source)
at actions.PublishBroadcast.MediaLibAction.uploadVideos(MediaLibAction.java:76)
at stepDefinitions.Publish.SDMediaLibrary.Upload_an_Image(SDMediaLibrary.java:43)
at ✽.When Upload an Image(features/publish/mediaLibrary/MediaLibrary.feature:10)

Answer 1

If you are trying to upload a file, and the page uses the standard upload mechanisms provided by HTML, you can do this directly with Selenium itself. The standard HTML mechanism is with an <input type=‘file’> element. Once you’ve found that file upload element on the page, you can use element.sendKeys(“full/path/and/file/name/here”);
where element would be :
WebElement element = driver.findElement(By.cssSelector(input[type='file']));

Answer 2

I was trying with the path to div which will not accept the values. So changes the path to input value //*[#id='fileList']//*[#type='file'] or //*[#id='fileList']//input[#type='file'] this worked.
Thanks to #Andersson